The earth makes one complete revolution on its axis in 23 h 56 min. Knowing that the mean radius of the earth is 3960 mi, determine the linear velocity and acceleration of a point on the surface of the earth (a) at the equator, (b) at Philadelphia, latitude 40° north, (c) at the North Pole.

Answers

Answer 1

At the equator, Philadelphia, and the North Pole, a point's linear velocity and acceleration are determined as described above.

(a) At the equator:

The Earth's equator has a radius of 3960 miles. Therefore, the linear velocity of a point on the surface of the Earth at the equator is:

v = ωr = (2π / 23.9333 hours) * 3960 miles = 1037.564 mph

The acceleration of a point on the surface of the Earth at the equator can be calculated using the formula:

[tex]a = v^2 / ra = (1037.564 mph)^2 / 3960 miles = 0.273 g[/tex]

(b) At Philadelphia, latitude 40° north:

r = 3960 miles * cos(40°) = 3004.05 miles

The linear velocity of a point on the surface of the Earth at Philadelphia is:

v = ωr = (2π / 23.9333 hours) * 3004.05 miles = 784.166 mph

[tex]a = v^2 / r = (784.166 mph)^2 / 3004.05 miles = 0.154 g[/tex]

(c) At the North Pole:

r = 3960 miles * cos(90°) = 3960 miles

The linear velocity of a point on the surface of the Earth at the North Pole is:

v = ωr = (2π / 23.9333 hours) * 3960 miles = 1038.993 mph

The acceleration of a point on the surface of the Earth at the North Pole is:

[tex]a = v^2 / r = (1038.993 mph)^2 / 3960 miles[/tex] = 0.034 g

A key idea in physics is acceleration, which defines how rapidly an object's velocity alters over time. In other words, it is the rate at which the velocity of an object changes in relation to time. An item is considered to be accelerating when its speed changes, whether it is increasing or decreasing.

Depending on how the velocity changes, acceleration can be either positive or negative. For instance, an object's acceleration is positive while it is speeding up, whereas it is negative when it is going down. According to Newton's second equation of motion, acceleration is directly linked to the force pulling on an object.

To learn more about Acceleration visit here:

brainly.com/question/30660316

#SPJ4

Answer 2

At the equator, Philadelphia, and the North Pole, a point's linear velocity and acceleration are determined as described above.

(a) At the equator:

The Earth's equator has a radius of 3960 miles. Therefore, the linear velocity of a point on the surface of the Earth at the equator is:

v = ωr = (2π / 23.9333 hours) * 3960 miles = 1037.564 mph

The acceleration of a point on the surface of the Earth at the equator can be calculated using the formula:

[tex]a = v^2 / ra = (1037.564 mph)^2 / 3960 miles = 0.273 g[/tex]

(b) At Philadelphia, latitude 40° north:

r = 3960 miles * cos(40°) = 3004.05 miles

The linear velocity of a point on the surface of the Earth at Philadelphia is:

v = ωr = (2π / 23.9333 hours) * 3004.05 miles = 784.166 mph

[tex]a = v^2 / r = (784.166 mph)^2 / 3004.05 miles = 0.154 g[/tex]

(c) At the North Pole:

r = 3960 miles * cos(90°) = 3960 miles

The linear velocity of a point on the surface of the Earth at the North Pole is:

v = ωr = (2π / 23.9333 hours) * 3960 miles = 1038.993 mph

The acceleration of a point on the surface of the Earth at the North Pole is:

[tex]a = v^2 / r = (1038.993 mph)^2 / 3960 miles[/tex] = 0.034 g

A key idea in physics is acceleration, which defines how rapidly an object's velocity alters over time. In other words, it is the rate at which the velocity of an object changes in relation to time. An item is considered to be accelerating when its speed changes, whether it is increasing or decreasing.

Depending on how the velocity changes, acceleration can be either positive or negative. For instance, an object's acceleration is positive while it is speeding up, whereas it is negative when it is going down. According to Newton's second equation of motion, acceleration is directly linked to the force pulling on an object.

To learn more about Acceleration visit here:

brainly.com/question/30660316

#SPJ4


Related Questions

A rod is being used as a lever. The fulcrum is 1.2m from the load and 2.4m form the applied force. The applied force is being applied at the end of the rod. If the load has a mass of 20.0kg, what force must be applied to lift the load?

Answers

Using the lever principle, a force of 98N is needed to lift the 20.0kg load. The load distance is 1.2m and the effort distance is 2.4m.

To solve this problem, we can use the formula for the lever principle:
(load distance) x (load force) = (effort distance) x (effort force)
In this case, the load distance is 1.2m, the load force is the weight of the load  [tex](20.0kg x 9.8m/s^2 = 196N[/tex]), the effort distance is 2.4m, and the effort force is what we need to find. Plugging in these values, we get:

(1.2m) x (196N) = (2.4m) x (effort force)

Simplifying and solving for the effort force, we get:

effort force = (1.2m x 196N) / 2.4m = 98N

Therefore, a force of 98N must be applied to lift the load.

learn more about force here:

https://brainly.com/question/13191643

#SPJ11

Write a differential equation that models the given situation. The stated rate of change is with respect to time t. (Use k for the proportionality constant.) For a car with maximum velocity M, the rate of change of the velocity v of the car is proportional to the difference between M and v. dv/dt=?

Answers

dv/dt = k is the differential equation that describes the situation as it is (M - v)

How can you tell if a function is a certain differential equation's solution?

The same procedure as before is used to assess whether a function is a solution to a certain differential equation: we evaluate the left and right sides of the d.e. and compare the results to check if they are equal.

What is a differential equation solution?

An expression for the dependent variable in terms of one or more independent variables that satisfy the relationship is the differential equation's solution. The generic solution often contains arbitrary constants or arbitrary functions and encompasses all potential solutions.

To know more about differential equation visit:-

https://brainly.com/question/30896158

#SPJ1

3. what is the spring constant? k = 0.49 incorrect: your answer is incorrect. n/cm 4. what is the force of the spring

Answers

The force of the spring is 1.6 meters. To determine the force of the spring, you would need to know the spring constant (k) and the displacement (x) of the spring from its equilibrium position.

The spring constant (k) represents the stiffness of a spring and is measured in units of force per unit length, such as N/m or N/cm. It describes the relationship between the force exerted on the spring (F) and its displacement (x) according to Hooke's Law: F = kx.

F = force exerted on the spring (N) where Kx

K = spring constant (3 kg/s2), and x = spring extension (m).

But force applied by an object is equal to mass times acceleration (9.8 m/s2).

F = 0.49kg × 9.8m/s²

F = 4.802N

Given that F = 4.802N

F = Kx 4.802 = 3 x 4.802/3 x = 1.6006 x = 1.6 m

The spring is stretched by 1.6 meters, or its extent.
Once you have both of these values, you can use the formula F = kx to calculate the force of the spring.

Learn more about Hooke's Law here

https://brainly.com/question/29126957

#SPJ11

Problem 1: A rock with mass m = 1 kg is submerging with constant acceleration at = 1.8 m/s2 into the level earth. The free-fall acceleration is g = 9.81 m/s2. Please answer the following questions. Otheexpertta.com Part (a) Write an expression for the magnitude of the force of gravity on the rock, Fg, in terms of the given quantities and variables available in the palette. Expression : F = Select from the variables below to write your expression. Note that all variables may not be required. a, b, , o, 0, at, d, FN, g, h, j, k, m, P, t Part (b) Calculate the magnitude of the force of gravity on the rock, Fin Newtons. Numeric : A numeric value is expected and not an expression. Fg== Part (c) In what direction does the force of gravity act? Multiple Choice : 1) Sideways. 2) Upwards. 3) Force doesn't have direction. 4) Downwards. 5) None of these choices. 6) All of these choices. Part (d) Write an expression for the magnitude of the total force of the system in the y-direction, Ft, in terms of the forces of the system. Expression : FT= Select from the variables below to write your expression. Note that all variables may not be required. a, b, c, o, 0, at, d, F, FN, g, h, j, m, P, t Part (e) Write an expression for the magnitude of the normal force Fn, in terms of m, at, and g. Expression : FN= Select from the variables below to write your expression. Note that all variables may not be required. a, b, n, , 0, at, d, FN, g, h, j, k, m, P, t Part (1) What is the magnitude of the normal force in N? Numeric : A numeric value is expected and not an expression. Fn = Part (g) In what direction is the normal force? Multiple Choice : 1) Sideways. 2) Downwards. 3) Force does not have direction. 4) Upwards. 5) None of these choices 6) All of these choices.

Answers

Part (a)  A rock with mass m = 1 kg is submerging with constant acceleration at the formula for the force magnitude of gravity acting on the rock is F = m x g (standard formula).

Part (b) : Calculate the magnitude of the force of gravity on the rock, Newtons. Numeric: A numeric value is expected and not an expression.

F == Part:

Here, m = 1 kg and g= a = 9.81 [tex]m/s^2[/tex](standard value of g)

F = m*g = 1 kg * 9.81 [tex]m/s^2[/tex]    

= 9.81 N

Numeric: F = 9.81 N

Part (c): Option 4 is Correct. Because gravity pulls downward.

Part (d) The total force of the system in the y-direction, Ft, may be written down as follows: Ft = Fg - m * at while the rock is submerged with a constant acceleration.

So, here we need the Expression:

[tex]F_t = F_g + F_N\\F_t = m*g + F_N[/tex]

Part (e) The formula for the normal force Fn's magnitude is Fn = m * (g - at).

So, here we need the Expression:

[tex]F_N = m*(at + g)\\F_N = m*(at + g)[/tex]

where m is the mass of the object, at is the acceleration of the object in the y-direction, and g is the acceleration due to gravity.

Part (f) When we change the values, we obtain:

Here, m = 1 kg

at = 1.8 [tex]m/s^2[/tex]  

g = 9.81 [tex]m/s^2[/tex]

[tex]F_N = m*(at + g) \\= 1 kg * (1.8 m/s^2 + 9.81 m/s^2) \\= 11.61 N[/tex]

Numeric: [tex]F_N[/tex] = 11.61 N

7.01 N is equal to  [tex]F_N[/tex] = [tex]1 kg * (9.81 m/s^2 - 1.8 m/s^2)[/tex]

Part (g): Option 4 is Correct. In direction is the normal force: Upwards is the correct option.

Upwards, since the typical force moves upward.

Learn more about magnitude visit: brainly.com/question/30337362

#SPJ4

calculate the resistance of a 40w automobile headlight designed for 12v

Answers

The resistance of the 40W automobile headlight designed for 12V is approximately 3.6 ohms.

Explanation:

To calculate the resistance of a 40W automobile headlight designed for 12V, we will use Ohm's Law and the formula for power.

Step 1: Recall the formula for power: P = IV, where P is power, I is current, and V is voltage.

Step 2: Rearrange the formula to solve for current (I): I = P / V

Step 3: Plug in the given values for power (40W) and voltage (12V): I = 40W / 12V

Step 4: Calculate the current: I = 3.33A

Step 5: Recall Ohm's Law: V = IR, where V is voltage, I is current, and R is resistance.

Step 6: Rearrange the formula to solve for resistance (R): R = V / I

Step 7: Plug in the given values for voltage (12V) and the calculated current (3.33A): R = 12V / 3.33A

Step 8: Calculate the resistance: R = 3.6Ω

The resistance of the 40W automobile headlight designed for 12V is approximately 3.6 ohms.

To know more about resistance visit:

https://brainly.com/question/30799966

#SPJ11

A 950-kg sports car accelerates from rest to 95 km/h in 6.0 s. What is the average power delivered by the engine?

Answers

The average power delivered by the engine is 20,708 watts.

To calculate the average power, follow these steps:

1. Convert 95 km/h to meters per second (m/s): 95 km/h * (1000 m/km) / (3600 s/h) = 26.39 m/s.
2. Calculate the car's final kinetic energy (KE) using the formula KE = 0.5 * mass * velocity²: 0.5 * 950 kg * (26.39 m/s)^2 = 330,322.95 J.
3. Since the car starts from rest, the initial KE is 0 J.
4. Calculate the change in kinetic energy: Final KE - Initial KE = 330,322.95 J - 0 J = 330,322.95 J.
5. Calculate the average power using the formula: Power = Change in KE / time: 330,322.95 J / 6.0 s = 20,708.33 W, which can be rounded to 20,708 watts.

To know more about  average power click on below link:

https://brainly.com/question/30888338#

#SPJ11

which one of the following compounds would exhibit seven signals in its 13c nmr spectrum? group of answer choices v iii iv i ii

Answers

To determine which compound would exhibit seven signals in its 13C NMR spectrum, we need to evaluate the number of unique carbon environments in each compound. Unique carbon environments are carbons that are not equivalent due to their connectivity or other factors.

Unfortunately, the specific compounds (i.e., v, iii, iv, i, ii) have not been provided. To help you further, please provide the structures or formulas of the compounds labeled as v, iii, iv, i, and ii.

The compound that would exhibit seven signals in its 13C NMR spectrum is compound IV.

Learn more about environments here:

https://brainly.com/question/29885760

#SPJ11

A 0.5 m x 0.5 m plate is inclined at a 30º angle. The top surface of the plate is well insulated. The bottom surface is maintained at 60ºC. The ambient air is at 0ºC. What is the film temperature (ºC)? Do not include the unit as it is assumed to be ºC. Calculate the Rayleigh number. Use scientific notation where 1 x 106 would be entered as 1.0 x 10^6. Calculate the Nusselt number. Calculate the convection heat transfer coefficient (W/m2-K). Do not include the units in your answer which are assumed to be W/m2-K. Calculate the rate of heat loss (W) from the plate. Do not include the unit which is assumed to be W.

Answers

The film temperature is 30ºC. The Rayleigh number is 4.4 x 10^9. The Nusselt number is 32. The convection heat transfer coefficient is 16.08. The rate of heat loss from the plate is 1283.6.

The film temperature is the average temperature of the plate's top surface, assuming that the convective heat transfer is uniform. In this case, the film temperature is equal to the average of the bottom surface temperature (60ºC) and the ambient temperature (0ºC), which is 30ºC.

The Rayleigh number is a dimensionless number that describes the ratio of buoyancy forces to viscous forces in a fluid.

It is given by Ra = gβΔTL^3/να, where g is the acceleration due to gravity, β is the coefficient of thermal expansion, ΔT is the temperature difference, L is the characteristic length scale (in this case, the thickness of the plate), ν is the kinematic viscosity of air, and α is the thermal diffusivity of air.

Plugging in the given values, the Rayleigh number is 4.4 x 10^9.

The Nusselt number is a dimensionless number that relates the convective heat transfer coefficient to the thermal conductivity of the fluid. It is given by Nu = hL/k, where h is the convective heat transfer coefficient and k is the thermal conductivity of air.

Using the empirical correlation for natural convection over a vertical plate, the Nusselt number can be approximated as Nu = 0.59Ra^(1/4). Plugging in the calculated Rayleigh number, the Nusselt number is 32.

The convection heat transfer coefficient is the proportionality constant between the heat transfer rate and the temperature difference between the plate and the surrounding fluid. It is given by h = kNu/L. Plugging in the given values, the convection heat transfer coefficient is 16.08.

The rate of heat loss from the plate is the product of the convective heat transfer coefficient, the plate's surface area, and the temperature difference between the plate and the surrounding fluid.

It is given by Q = hA(θ-τ), where A is the surface area, θ is the plate temperature, and τ is the surrounding fluid temperature. Plugging in the given values, the rate of heat loss from the plate is 1283.6.

For more questions like Temperature click the link below:

https://brainly.com/question/11464844

#SPJ11

if a current of 50 ma exists for 1.4 min, how many coulombs of charge have passed through the wire?

Answers

To find the total charge that has passed through the wire, we can use the formula Q = I x t, where Q is the charge in coulombs, I is the current in amperes, and t is the time in seconds.

First, we need to convert the current from milliamperes to amperes by dividing by 1000:
50 mA = 0.05 A

Next, we need to convert the time from minutes to seconds by multiplying by 60:
1.4 min = 84 s

Now we can plug in the values and solve for Q:
Q = 0.05 A x 84 s
Q = 4.2 C


Therefore, 4.2 coulombs of charge have passed through the wire.

Learn more about current here:

https://brainly.com/question/31297138

#SPJ11

A wire carrying 15 A makes a 23 ∘ angle with a uniform magnetic field. The magnetic force per unit length of wire is 0.34 N/m .
Part A
What is the magnetic field strength? In (mT)
Express your answer using two significant figures.
Part B
What is the maximum force per unit length that could be achieved by reorienting the wire in this field? in (N/m)
Express your answer using two significant figures.

Answers

the maximum force per unit length that could be achieved by reorienting the wire in this field is approximately 0.15 N/m.

Part A:
Using the formula for magnetic force per unit length, we can solve for the magnetic field strength:
F/L = BILsinθ
0.34 N/m = B(15 A)Lsin23°
B = 0.34 N/m / (15 A)(Lsin23°)
Since we do not have the length of the wire, we cannot solve for the exact magnetic field strength. However, we can rearrange the formula to show that magnetic field strength is proportional to the magnetic force per unit length, the current, and the sine of the angle between the wire and the magnetic field:
B ∝ F/LIsinθ
Therefore, if we know the magnetic force per unit length and the angle, we can compare the strength of two different magnetic fields. For example, if we have another wire carrying the same current and making the same angle with a different magnetic field, we can compare the magnetic force per unit length and use the formula above to determine which magnetic field is stronger.

Part B:
The maximum force per unit length that could be achieved by reorienting the wire in this field would occur when the wire is perpendicular to the magnetic field. In this case, the angle θ would be 90° and the sine of 90° is 1. Therefore, we can use the same formula as above and plug in the maximum value for sinθ:
F/L = BILsinθ
F/L = BIL(1)
F/L = BIL
F/L = (0.001 T)(15 A)
F/L = 0.015 N/m
Therefore, the maximum force per unit length that could be achieved by reorienting the wire in this field is 0.015 N/m (rounded to two significant figures).
Part A
To find the magnetic field strength, we can use the formula for magnetic force per unit length on a current-carrying wire in a uniform magnetic field:

F/L = B * I * sin(θ)

where F/L is the force per unit length (0.34 N/m), B is the magnetic field strength, I is the current (15 A), and θ is the angle between the wire and the magnetic field (23°).

0.34 N/m = B * 15 A * sin(23°)
B = (0.34 N/m) / (15 A * sin(23°))
B ≈ 0.0102 T

To express the answer in millitesla (mT), we multiply by 1000:

B ≈ 10.2 mT

Part B
The maximum force per unit length occurs when the angle between the wire and the magnetic field is 90° (sin(90°) = 1):

Fmax/L = B * I * sin(90°)
Fmax/L = 10.2 mT * 15 A * 1
Fmax/L ≈ 0.153 N/m

So, the maximum force per unit length that could be achieved by reorienting the wire in this field is approximately 0.15 N/m.

To know more about magnetic field strength click here:

brainly.com/question/11462606

#SPJ11

Using what you know about the compressibility of different states of matter explain why
a) air is used to inflate tyres
b) steel is used to make railway lines

Answers

Answer:

Explanation:

a) Air is highly compressible. As it has pressure it can also handle atm (Atmosphere) pressure. It makes the drving smooth and gives the required friction for driving. Also it is very easily available.

b) Steel is free from rust and it has high tensile strength. It has the resistence to internal and external cracks.

A car is traveling at a speed of 30m/s when it leaves a ramp set up at an angle of 37 degrees from the ground. How much time does it take for the car to reach the maximum height of its jump?

Answers

The time in which the car reaches it maximum Haight is ≈1.8 seconds.

We know that when the car leaves the ramp , it will move in upward direction and forward direction .

velocity of moving forward=  v cos(a).......(initial velocity of moving front)

velocity of moving  upward = v sin(a).......(initial velocity of moving up)

v is the  initial velocity of car(30m/s), a is the angle of ramp(37°).

velocity of moving up for car at Max. hight = 0m/s

We know that,

final velocity=initial velocity - gt (g is acceleration due to gravity, t is time)

when something moves upward .

so,

0=v sin(a)-9.8t

t≈1.8 seconds

To learn more about Projectile Motion go to :

https://brainly.com/question/4247569?referrer=searchResults

what work is done by the electric force when the charge moves a distance of 0.720 mm upward?

Answers

Work DONE BY Electric force

W = Fd = Eqd

To calculate the work done by the electric force when a charge moves a distance of 0.720 mm upward, we need to use the formula W = Fd, where W is the work done, F is the electric force, and d is the distance moved.

Assuming the charge is moving in a uniform electric field, we can use the formula F = Eq, where E is the electric field strength and q is the charge of the particle.

So, we have W = Fd = Eqd and d = 0.720 mm. Substituting these values into the work formula, we get:

W = Fd = Eqd

To solve for W, we need to know the values of E and q. If these are not given in the problem, we cannot solve for W.

However, we can say that the work done by the electric force depends on the magnitude of the charge and the strength of the electric field.

If the charge is positive and moves in the direction of the electric field, the electric force will do positive work (i.e. the force and displacement are in the same direction).

If the charge is negative and moves opposite to the electric field, the electric force will do negative work (i.e. the force and displacement are in opposite directions).

For more information on work  by electric forcehttps://brainly.com/question/25923373

#SPJ11

You are spinning two identical balls attached to strings in uniform circular motion, Ball 2 has a string that is twice as long as the string with ball 1, and the rotational speed (v) of ball 2 is three times the rotational speed of ball 1. What is the ratio of the centripetal force of ball 2 to that of ball 1?

Answers

The ratio of the centripetal force of ball 2 to that of ball 1 is 9:2.



To find the ratio of the centripetal force of ball 2 to that of ball 1, let's first look at the formula for centripetal force:
[tex]F_c = m * v^2 / r[/tex]

where [tex]F_c[/tex] is the centripetal force, m is the mass of the ball, v is the rotational speed, and r is the radius (or length of the string).

Given that ball 2 has a string that is twice as long as ball 1, we can represent the radii as:
[tex]r_1[/tex] = r (for ball 1)
[tex]r_2[/tex] = 2r (for ball 2)

Also, the rotational speed of ball 2 is three times the rotational speed of ball 1, so we have:
[tex]v_1[/tex] = v (for ball 1)
[tex]v_2[/tex] = 3v (for ball 2)

Now, we can substitute these values into the centripetal force formula for each ball:
[tex]F_{c1} = m * v^2 / r\\F_{c2} = m * (3v)^2 / (2r)[/tex]

Now, we need to find the ratio of [tex]F_{c2}[/tex] to [tex]F_{c1}[/tex]:
[tex]F_{c2} / F_{c1} = (m * (3v)^2 / (2r)) / (m * v^2 / r)[/tex]

The mass (m) and the speed squared (v²) terms will cancel out:
[tex]F_{c2} / F_{c1} = ((3^2) / 2)\\F_{c2} / F_{c1} = (9 / 2)[/tex]

Learn more about centripetal force:

https://brainly.com/question/20905151

#SPJ11

37.•• an object has a weight of 8.0 n in air. however, it apparently weighs only 4.0 n when it is completely submerged in water. what is the density of the object?

Answers

The density of an object has a weight of 8.0 N in air and an apparent weight of 4.0 N when submerged in water is 2000 kg/m³.

To determine the density of an object with a weight of 8.0 N in air and an apparent weight of 4.0 N when submerged in water, you'll need to use Archimedes' principle and the formula for density.

First, calculate the buoyant force (which is equal to the loss of weight in water):

Buoyant force = Weight in air - Apparent weight in water

= 8.0 N - 4.0 N

= 4.0 N

Next, calculate the volume of displaced water using the buoyant force and the density of water (1000 kg/m³):

Volume = Buoyant force / (density of water × gravity)

= 4.0 N / (1000 kg/m³ × 9.81 m/s²)

≈ 0.000408 m³

Now, find the mass of the object using its weight and gravity:

Mass = Weight / gravity

= 8.0 N / 9.81 m/s²

≈ 0.815 kg

Finally, determine the density of the object using the mass and the volume:

Density = Mass / Volume

≈ 0.815 kg / 0.000408 m³

≈ 2000 kg/m³

So, the density of the object is approximately 2000 kg/m³.

Learn more about density: https://brainly.com/question/29775886

#SPJ11

The speed-time graph of a car is shown in the figure, which of the following statement is true: (figure shown in attachment)

• Car has an acceleration of 1.5 ms-2
• Car has constant speed of 7.5 ms-1
• Distance travelled by the car is 75 m
• Average speed of the car is 15 ms-1

Answers

In the speed-time graph of a car in the figure, the correct statement is, the distance traveled by car is 75 m. Thus, option C is correct.

Speed is the distance traveled by an object per unit of time. In the graph, speed is taken in the Y axis, and time in the X axis. In the speed-time graph, the acceleration of an object and the distance traveled by an object can be determined. In the speed-time graph, the acceleration is obtained by taking the slope. From the figure, the speed of the car decreases, and it is called deceleration. If the car has a constant speed, the graph has a line parallel to the X-axis.

The distance traveled by car is obtained by determining the area of the figure.  The area of the figure is a triangle.

Distance = Area of the triangle = 1/2 (base×height)

                                                    = (15×10) /2

                                                    = 75m

The distance traveled by car is 75m. The ideal solution is C.

To learn more about the speed-time graph:

https://brainly.com/question/17261628

#SPJ1

The decay constant of a radioactive nuclide is 4.6 × 10-3 s-1. What is the half-life of the nuclide?3.6 min2.5 min2.0 min1.4 min3.1 min

Answers

The decay constant of a radioactive nuclide is 4.6 × 10-3 s-1. the half-life of the nuclide is approximately 2.5 minutes.

To determine the half-life of the radioactive nuclide with a decay constant of 4.6 × 10⁻³ s⁻¹, we can use the following formula:

Half-life (T½) = ln(2) / decay constant

Where ln(2) is the natural logarithm of 2, which is approximately 0.693.

Now, plug in the given decay constant:

T½ = 0.693 / (4.6 × 10⁻³ s⁻¹)

T½ ≈ 150.65 seconds

To convert seconds to minutes, divide by 60:

T½ ≈ 150.65 / 60

T½ ≈ 2.51 minutes

So, the half-life of the nuclide is approximately 2.5 minutes.

Learn more about the half-life of the radioactive nuclide at  brainly.com/question/14392508

#SPJ11

A turbine blade rotates with angular velocity w(t) = 5.00 rad/s - 1.20 rad/s^3 t^2. What is the angular acceleration of the blade at t = 7 s? a. 10.1 rad/s^2 b. -20.2 rad/s^2 c. 23.5 rad/s^2 d. -16.8 rad/s^2 e. 13.4 rad/s^2

Answers

The angular acceleration of the blade at t = 7 s is -16.8 rad[tex]/s^2[/tex], which is option (d).

The given angular velocity of the blade is:

w(t) = 5.00 rad/s - 1.20 [tex]rad/s^3 t^2[/tex]

To find the angular acceleration of the blade, we need to differentiate the angular velocity with respect to time:

[tex]a(t) = dw(t)/dt = d/dt (5.00 rad/s - 1.20 rad/s^3 t^2)= - 2.40 rad/s^3 t[/tex]

Now, we can substitute t = 7 s into the expression for angular acceleration:

[tex]a(7) = -2.40 rad/s^3 (7)\\= -16.8 rad/s^2[/tex]

Therefore, the angular acceleration of the blade at t = 7 s is -16.8 r[tex]ad/s^2,[/tex]which is option (d).

learn more about velocity here:

https://brainly.com/question/31475519

#SPJ4

The pendulum illustrated above has a length of 2 m and a bob of mass 0.04 kg. It is held at an angle theta, as shown, where cos(theta) = 0.9. If the pendulum is released from rest, the maximum speed the bob attains is most nearly?

Answers

The maximum speed the bob of the pendulum attains is nearly 5.97 m/s.

The velocity changes continuously as the pendulum bob moves back and forth. There are times when the velocity is negative (when the pendulum bob is moving left) and other times when it is positive (when it is moving right). And, of course, there will be times when the velocity will be 0 m/s.

From the energy conservation statement

Ui + Ki = Uf + Kf

Ki = 0 as the ball is released from the state of rest.

Uf = 0 where Uf is the final potential energy

So Ui = Kf or mgh = ½ mv², where h is the height from which the ball is released.

Cancelling m on both sides we get

v = (2gh)½

To determine the height h

h = L - Lcos θ = L (1-cos θ)

h =  2 - 2× 0.09 = 1.82

So  v = (2gh)½

v =( 2 × 9.8 × 1.82)¹/²

v = √35.672

v= 5.97 m/s

To learn more about speed, refer to the link:

https://brainly.com/question/30462853

#SPJ12

The maximum speed the bob of the pendulum attains is nearly 5.97 m/s.

The velocity changes continuously as the pendulum bob moves back and forth. There are times when the velocity is negative (when the pendulum bob is moving left) and other times when it is positive (when it is moving right). And, of course, there will be times when the velocity will be 0 m/s.

From the energy conservation statement

Ui + Ki = Uf + Kf

Ki = 0 as the ball is released from the state of rest.

Uf = 0 where Uf is the final potential energy

So Ui = Kf or mgh = ½ mv², where h is the height from which the ball is released.

Cancelling m on both sides we get

v = (2gh)½

To determine the height h

h = L - Lcos θ = L (1-cos θ)

h =  2 - 2× 0.09 = 1.82

So  v = (2gh)½

v =( 2 × 9.8 × 1.82)¹/²

v = √35.672

v= 5.97 m/s

To learn more about speed, refer to the link:

https://brainly.com/question/30462853

#SPJ12

The graph below shows the time and position of a motorcycle as it travels through several photogates. Calculate the velocity of the motorcycle as it moves from gate C to gate D.

Answers

C. 0.5 m/s. From the graph, the change in position within 2 seconds from gate C to gate D is 1 m. Then, the velocity of the motorcycle is 0.5 m/s. Hence, option C is correct.

What is position - time graph ?

Position - time graph of an item describes the change in position with regard to time. The time is given in the x-axis, while the position is given in the y-axis. The position-time graph can be used to determine the object's velocity. The ratio of a moving object's distance travelled to its travel time is its velocity. The velocity unit is m/s. Being a vector quantity with magnitude and direction, velocity has both.

From the graph, the time taken by the motor cycle is 2 seconds. The distance travelled from C to D is 1 m (7 m to 8 m).

velocity = distance/ time

v = 1 m/ 2 s

= 0.5 m/s.

To know more about the position -time graph visit:

https://brainly.com/question/29084676

#SPJ1

Please help!!! I will mark brainiest!!!!

Answers

For a beam of length 20.0 m and mass 40.0 kg resting on two supports placed at 5.0 m from each end with a person of mass 50.0kg on the beam between the supports, the value of N₁ + N₂ is 882.9 N.

How to calculate reaction forces?

The weight of the beam and the person is equal to the sum of the reaction forces at the supports:

W + P = N₁ + N₂

where W = weight of the beam and

P = weight of the person.

W = mg = 40.0 kg × 9.81 m/s² = 392.4 N

P = mg = 50.0 kg × 9.81 m/s² = 490.5 N

So, N₁ + N₂ = W + P = 882.9 N.

Find out more on reaction force here: https://brainly.com/question/29447428

#SPJ1

what is the standard enthalpy of a reaction for which the equilibrium constant is (a) doubled and (b) halved when the temperature is increased from 298 k to 308 k?

Answers

The standard enthalpy of a reaction is affected by changes in temperature and equilibrium constant, with higher temperatures generally leading to more negative values of enthalpy for favorable reactions.

What's standard enthalpy

The standard enthalpy of a reaction is the change in enthalpy that occurs during a chemical reaction under standard conditions, which include a temperature of 298 K and a pressure of 1 bar.

When the temperature is increased from 298 K to 308 K, the equilibrium constant of a reaction will change, which will in turn affect the standard enthalpy of the reaction.

If the equilibrium constant is doubled when the temperature is increased, this means that the reaction is becoming more favorable in the forward direction. In this case, the standard enthalpy of the reaction will become more negative, indicating that more heat is released during the reaction.

On the other hand, if the equilibrium constant is halved when the temperature is increased, this means that the reaction is becoming less favorable in the forward direction. In this case, the standard enthalpy of the reaction will become less negative, indicating that less heat is released during the reaction.

Learn more about enthalpy at

https://brainly.com/question/13996238

#SPJ11

lens 2 - the diverging lens: what is the object distance do2 with a proper sign?

Answers

This formula gives us the object distance (do2) for a given image distance (di) and focal length (f2) of the diverging lens.

As a diverging lens always produces virtual images, the object distance (do2) for a diverging lens is always negative.

To calculate the object distance, we need to use the lens formula:

[tex]1/f = 1/do_2 + 1/d_i[/tex]

Since the image formed by a diverging lens is always virtual, di will also be negative. Let's assume that the image distance is -di.

Then, the equation becomes:

[tex]1/f = 1/do_2 - 1/d_i[/tex]

We know that the focal length of a diverging lens is always negative, so let's assume that f = -f2.

Substituting the given values, we get:

[tex]do_2 = f_2 * d_i / (d_i - f_2)[/tex]

Since the object distance is negative for a diverging lens, we can put a negative sign before the formula:

[tex]do_2 = -f_2 * d_i / (d_i - f_2)[/tex]

Learn more about focal length visit: brainly.com/question/28039799

#SPJ4

Correct Question:

For the below lens 2 - the diverging lens: what is the object distance do2 with a proper sign?

Some makes of older cars have 6.00-V electrical systems. (a) What is the hot resistance of a 30.0-W headlight in such a car? (b) What current flows through it?

Answers

According to the question the R is the resistance is 0.2 Ω and I is the current is 30.0 A.

What is resistance?

Resistance is the opposition to the flow of current through a material. Resistance is measured in ohms and is caused by the collisions between electrons and ions in the material. Resistance is a key component of electrical circuits, and is used to regulate the flow of electrical current.

a) The hot resistance of a 30.0-W headlight in a 6.00-V electrical system can be calculated using the equation:
R = V/I
where R is the resistance, V is the voltage and I is the current.
Therefore, R = 6.00/30.0 = 0.2 Ω

b) The current flowing through the 30.0-W headlight in a 6.00-V electrical system can be calculated using the equation:
I = V/R
where I is the current, V is the voltage, and R is the resistance.
Therefore, I = 6.00/0.2 = 30.0 A.

To learn more about resistance
https://brainly.com/question/17563681
#SPJ1

a 3.10 kg rock whose density is 4600 kg/m3 is suspended by a string such that half of the rock's volume is under water.. What is the tension in the string?

Answers

the equation using V_rock = 3.10 / 4600 (since density = mass / volume), we get:Tension = 30.38 N

How to solve the question?

To solve this problem, we can use Archimedes' principle, which states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object. In this case, the buoyant force acting on the rock is equal to the weight of the water displaced by the part of the rock submerged in water.

First, we need to find the volume of the rock. We know that half of the rock's volume is under water, so the volume of the rock is:

V_rock = (2 * V_underwater) = (2 * (0.5 * V_rock)) = V_rock

where V_underwater is the volume of the rock submerged in water.

Rearranging the equation, we can find the volume of the rock:

V_rock = V_underwater / 0.5

Next, we can find the weight of the water displaced by the rock, which is equal to the buoyant force acting on the rock:

F_buoyant = weight of water displaced = density of water * volume of water displaced * gravity

where density of water = 1000 kg/m³, volume of water displaced = 0.5 * V_rock, and gravity = 9.8 m/s²

Substituting the values, we get:

F_buoyant = 1000 * (0.5 * V_rock) * 9.8

Now, we can find the weight of the rock:

weight of rock = mass of rock * gravity

where mass of rock = 3.10 kg and gravity = 9.8 m/s².

Substituting the values, we get:

weight of rock = 3.10 * 9.8

Finally, the tension in the string is equal to the weight of the rock minus the buoyant force acting on the rock:

Tension = weight of rock - F_buoyant

Substituting the values, we get:

Tension = (3.10 * 9.8) - (1000 * (0.5 * V_rock) * 9.8)

Simplifying the equation using V_rock = 3.10 / 4600 (since density = mass / volume), we get:

Tension = 30.38 N

Therefore, the tension in the string is 30.38 N.

To know more about tension visit :-

https://brainly.com/question/24994188

#SPJ1

A Normalize this wave function. What is the (positive) value of C once this wave function is normalized? You will need the formula se eres? = V -az? Express your answer in terms of w, m, n, and . View Available Hint(s) 190 AED ? CE Submi

Answers

Normalizing a wave function and finding the value of the constant C. The wave function you provided is not clear, but I can still guide you through the process.

To normalize a wave function, you need to ensure that the integral of the wave function's magnitude squared over all space is equal to 1. The formula for normalization is:

∫ |Ψ(x)|^2 dx = 1

Here, Ψ(x) represents the wave function, and |Ψ(x)|^2 represents the square of the wave function's magnitude. To find the positive value of C, you would need to:

1. Multiply the wave function by its complex conjugate: C*Ψ(x)*CΨ*(x), where Ψ*(x) is the complex conjugate of Ψ(x).
2. Integrate the result over all space.
3. Set the integral equal to 1 and solve for C.
once you have the wave function, you can follow these steps to find the value of C in terms of the given variables.

To learn more about magnitude  click here

brainly.com/question/30395926

#SPJ11

suppose that you wish to construct a telescope that can resolve features 9.5 km across on the moon, 384,000 km away. you have a 3.8 −m -focal-length objective lens whose diameter is 13.0 cm .

Answers

To construct a telescope that can resolve features 9.5 km across on the moon, 384,000 km away. you have a 3.8 m focal-length objective lens whose diameter is 13.0 cm , we would need a magnification of approximately 81.5x.

To calculate the required angular resolution of the telescope, we can use the formula:

           θ = 1.22 λ/D

Where θ is the angular resolution, λ is the wavelength of light (we'll assume a value of 550 nm for green light), and D is the diameter of the objective lens.

            θ = 1.22 (550 nm) / (13 cm) = 0.000303 radians

Next, we can calculate the angular size of the features on the moon:

            θ = size / distance
   
where size is the size of the feature we want to resolve (9.5 km) and distance is the distance to the moon (384,000 km).

           θ = (9.5 km) / (384,000 km)

              = 0.0000247 radians

Finally, we can calculate the magnification required to achieve the desired resolution:

           Magnification = angular size of the feature / angular resolution of the telescope

           Magnification = 0.0000247 radians / 0.000303 radians = 81.5

Therefore, we would need a magnification of approximately 81.5x to resolve features 9.5 km across on the moon using a 3.8 m focal length objective lens with a diameter of 13 cm.

Learn more about focal length here:

https://brainly.com/question/28039799

#SPJ11

To construct a telescope that can resolve features 9.5 km across on the moon, 384,000 km away. you have a 3.8 m focal-length objective lens whose diameter is 13.0 cm , we would need a magnification of approximately 81.5x.

To calculate the required angular resolution of the telescope, we can use the formula:

           θ = 1.22 λ/D

Where θ is the angular resolution, λ is the wavelength of light (we'll assume a value of 550 nm for green light), and D is the diameter of the objective lens.

            θ = 1.22 (550 nm) / (13 cm) = 0.000303 radians

Next, we can calculate the angular size of the features on the moon:

            θ = size / distance
   
where size is the size of the feature we want to resolve (9.5 km) and distance is the distance to the moon (384,000 km).

           θ = (9.5 km) / (384,000 km)

              = 0.0000247 radians

Finally, we can calculate the magnification required to achieve the desired resolution:

           Magnification = angular size of the feature / angular resolution of the telescope

           Magnification = 0.0000247 radians / 0.000303 radians = 81.5

Therefore, we would need a magnification of approximately 81.5x to resolve features 9.5 km across on the moon using a 3.8 m focal length objective lens with a diameter of 13 cm.

Learn more about focal length here:

https://brainly.com/question/28039799

#SPJ11

Case 1 Vo V COP POLICE The radar in a cop car uses a frequency of 7.500x10°Hz. Assume the EM waves from the radar propagate in ALL directions. Case 1: A car and the cop car move in opposite direction away from each other. speed of car Vo = 26.0 m/s. Speed of Cop car Vcop = 53.0 m/s What is the RELATIVE SPEED between the car and the cop car?

Answers

The relative speed between the car and the cop car is the difference between their velocities, or in this case is 27.0 m/s.

What is relative speed?

Relative speed is the rate at which two objects move in relation to each other. It measures the distance between two objects, such as two cars, over a period of time and is often expressed as a ratio of two speeds. Relative speed can also be used to quantify the motion of an object in a certain direction, such as a vehicle moving along a highway. Relative speed is an important concept in physics and engineering, as it helps to define the motion of objects in a given environment.

The relative speed between the car and the cop car is the difference between the two speeds. Since the car and the cop car are moving in opposite directions, this means that their velocities are subtracting from each other. Therefore, the relative speed between the car and the cop car is the difference between their velocities, or in this case:

Relative speed = Vcop - Vo = 53.0 m/s - 26.0 m/s
= 27.0 m/s.


To learn more about relative speed
https://brainly.com/question/31320632
#SPJ1

an airplane has to land at a destination 300 km northeast with a wind blowing at 40 km/h due south. if the airspeed of the plane is 180 km/h, what is the required heading of the plane?

Answers

To calculate the required heading of the plane, we need to use vector addition. The velocity of the plane relative to the ground can be found by adding the velocity of the plane relative to the air (airspeed) to the velocity of the wind relative to the ground.

First, we need to find the velocity of the wind relative to the plane. We can do this by subtracting the velocity of the wind due south (40 km/h) from the velocity of the plane due northeast (180 km/h).

Using the Pythagorean theorem, we can find the magnitude of the velocity of the plane relative to the ground:

(180 km/h)^2 + (40 km/h)^2 = 33800

√33800 = 183.7 km/h

Now we can use trigonometry to find the angle between the velocity of the plane relative to the ground and the direction of the destination (northeast).

tan θ = opposite/adjacent = 300 km/183.7 km/h

θ = tan^-1 (300/183.7) = 59.8°

Therefore, the required heading of the plane is 59.8° northeast.
To find the required heading of the plane, we need to consider the wind and the airspeed of the plane. Since the wind is blowing due south at 40 km/h and the plane's airspeed is 180 km/h, we can use vector addition to find the ground speed vector of the plane.

Let's represent the plane's airspeed vector as A and the wind's vector as W. The ground speed vector, G, can be represented as G = A + W. The plane needs to travel 300 km northeast, so we'll need to adjust the plane's airspeed vector accordingly.

Given the wind vector W = [0, -40] (0 in the east-west direction and -40 in the north-south direction) and the desired ground speed vector G = [300/sqrt(2), 300/sqrt(2)] (since it's traveling northeast).

Now, we'll find the airspeed vector A:
A = G - W
A = [300/sqrt(2), 300/sqrt(2) + 40]

Now, to find the required heading of the plane, we need to calculate the angle with respect to the east direction:

angle = arctan(A_y/A_x)
angle = arctan((300/sqrt(2) + 40)/(300/sqrt(2)))

Use a calculator to find the angle value. This will give you the required heading of the plane to reach its destination 300 km northeast considering the wind and airspeed.

Visit here to learn more about magnitude brainly.com/question/14452091

#SPJ11

Home-made x-ray source: You have a 4000 volt DC, 200 watt power supply. Which elements are suitable for use as your anode (target) material for generating Kb x-rays?

Answers

For generating Kb x-rays using a home-made x-ray source with a 4000 volt DC, 200 watt power supply, suitable elements for use as your anode (target) material would be those with a high atomic number such as tungsten (W), molybdenum (Mo), or copper (Cu).

These elements are known to produce intense Kb x-rays at the given voltage and wattage, making them ideal for use in an improvised x-ray source.

It is important to note, however, that operating a home-made x-ray source can be extremely hazardous and should only be attempted by trained professionals with appropriate safety equipment and precautions in place.

To know more about elements refer here:

https://brainly.com/question/13025901

#SPJ11

Other Questions
simplify (-8)(-14)(16) Would you expect to see attenuation in the lacoperon and other operons that control the metabolism of sugars? Why or why not? Use your wild imagination, how would you set up the mutation study to support your answer? You must thoroughly explain your experimental setup for me to understand. If you search certain website or research article to answer this question, you have to in-text cite your reference. what nuclide is produced when o- 15 decays by positron emission? Which of the following is/are used to classify a star based on its temperature in luminosity?Parallax measurements Hertzsprung Russell diagram Blackbody spectrum Line spectra a house that 15 years ago was worth $200,000 has increased in value by 3ach year because of inflation. what is its worth today? (round your answer to the nearest cent.) a certain fuse "blows" if the current in it exceeds 1.0 A, at which instant the fuse melts with a current density of 600 A/ cm^2. What is the diameter of the wire in the fuse? This Question: 2 pts 18 of 23 (12 complete) Jia borrows $50,000 at 10 percent annually compounded interest to be repaid in four equal annual installments. The actual end-of-year loan payment is O A. $14,340 B. $10,774 C. $15.773 D. $12,500 Regarding subject receipt of a signed and dated copy of the consent forms, what is different for FDA regulations? 20. Pluem, Frank, and Nanon are brothers, each with some money to give to their siblings. Pluem givesmoney to Frank and Nanon to double the money they both have. Frank then gives money to Pluem andNanon to double the money they both have. Finally, Nanon gives money to Pluem and Frank to doubletheir amounts. If Nanon had 20 dollars at the beginning and 20 dollars at the end, how much, in dollars,did the siblings have in total?SOLUTION. Identify a USE of cash:(select only one alternative)(Group of answer choices)Equity is issuedAccounts Receivable goes downDividend is paidAccounts Payable goes upMachinery is sold Choose a correct name for the line shown. C B A overleftrightarrow BB overleftrightarrow AB AC BC What is the critical value t* for constructing a 95% confidence interval for a mean from a sample size of n=20 observations? what is the coenzymatic function of tetrahydrofolate? transamination transfer of single carbon units retro-aldol cleavage racemization Write an argument about which method of teaching language ( e.g. interruption method, code - switching, or code - meshing) id most likely to promote socially adaptable people, and explain why in a detailed analysis how frequently would you expect a 8-bp sequence A junta is defined asO a small group that controls the government.a large group that controls business interests.a large group that controls the government.O a small group that controls business interests. T/F: a homegroup offers better security than workgroup sharing In the words answers and jumps, the s ending is aa. phoneme. b. syntax. c. semantic. d. morpheme. The following is the structure of acetic acid (vinegar). According to valence bond theory, what hybridizations would you predict for the indicated atoms?i sp3;ii sp2;iii sp2 For random samples of size n=16 selected from a normal distribution with a mean of = 75 and a standard deviation of = 20, find each of the following: The range of sample means that defines the middle 95% of the distribution of sample means