Initial velocity = 0 m/s
Displacement = 5 m
Acceleration = 10cos25° = 9.06 m/s^2
time = ? (To be calculated)
Using, S = ut + at^2/2, we have
5 = 0(t)+9.06t^2/2
10/9.06 = t^2
t = 1.006 seconds
what is the effect on electrostatic force if distance increase 3 times
Here is your Answer:-
If the distance separating the objects is tripled, then what is the new force? Explanation: -The electrostatic force is inversely related to the square of the separation distance. So if d is three times larger, then F is nine times smaller – that is, one-ninth the original value.
Answer:
Explanation:
Given:
r₂ = 3·r₁
________
F₂ / F₁ - ?
According to Coulomb's law:
F₁ = k·q₁·q₂ / r₁²
F₂ = k·q₁·q₂ / r₂²
F₂ / F₁ = (r₁ / r₂)²
F₂ / F₁ = ( r₁ / (3·r₁)² = (1 / 3)² = 1 / 9
Strength will decrease by 9 times
calculate the response of an undamped system with stiffness k and mass m to the excitation given in fig. 7, assuming the system is initially at rest.
The undamped natural frequency, the damping ratio and the damped natural frequency are 3.162 rad / s, 0.211 and 3.098 rad / s respectively.
ωn = √ ( k / m )
ζ = c / 2 √ k m
ωn = Undamped natural frequency
k = Stiffness
m = Mass
ζ = Damping ratio
c = Damping co-efficient
m = 150 kg
k = 1500 N / m
c = 200 kg / s
ωn = √ ( 1500 / 150 )
ωn = 3.162 rad / s
ζ = 200 / 2 √ ( 1500 * 150 )
ζ = 0.211
Since ζ < 1, the system is underdamped and the solution will oscillate.
ωd = ωn √ ( 1 - ζ² )
ωd = Damped natural frequency
ωd = 3.162 √ ( 1 - 0.211² )
ωd = 3.162 √ 0.96
ωd = 3.162 * 0.98
ωd = 3.098 rad / s
Therefore,
Undamped natural frequency, ωn = 3.162 rad / sDamping ratio, ζ = 0.211Damped natural frequency, ωd = 3.098 rad / sThe system is underdampedThe solution will oscillateThe given question is incomplete. The complete question is:
A spring-mass-damper system has mass of 150 kg, stiffness of 1500 N/m and damping coefficient of 200 kg/s. Calculate the undamped natural frequency, the damping ratio and the damped natural frequency. Is the system overdamped, underdamped or critically damped? Does the solution oscillate?
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a collision occurs between a 2.00 kg particle traveling with velocity and a 4.00 kg particle traveling with velocity . the collision connects the two particles. what then is their velocity in (a) unit-vector notation and as a (b) magnitude and (c) angle?
To find the answers learn collision and magnitude.
What is magnitude?
The most straightforward way to define magnitude is "distance or quantity." In either an absolute or relative sense, it displays the size or motion of an object. It serves as a way to convey the size or scope of something. The majority of the time, magnitude refers to a length or size.
What is collision?
Collision, also known as impact, is the sudden, violent coming together of two bodies in direct contact, such as two pool cues, a golf club and a ball, a hammer and a nail, two railroad cars when coupled, or a falling object and a floor.
This is a completely inelastic collision , but Eq. 9−53 (V=m₁/m₁+m₂ V₁i)
is not easily applied since that equation is designed for use when the struck particle is initially stationary. To deal with this case (where particle 2 is already in motion), we return to the principle of momentum conservation:
m₁ V^→₁+m₂V^→₂=(m₁+m₂) V^→ ⇒ V^→ =2(4i-5j)+4(6i-2j)/2+4
(a) In unit -vector notation , then V^→ =(2.67m/s)i+(-3.00m/s)j
(b) The magnitude of V^→ is |V^→| =4.01m/s
(c) The direction of V^→ is 48.4°c (measured clockwise, from the + x axis)
Therefore, unit -vector notation , then V^→ =(2.67m/s)i+(-3.00m/s)j, the magnitude of V^→ is |V^→| =4.01m/s, the direction of V^→ is 48.4°c (measured clockwise, from the + x axis)
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Give reason:why Goverment should promote mushroom farming.
Answer:
Mushroom are healthy and they are good your body and energy and other very important health proteins and stuff but it shouldn't only focus on mushrooms because they won't help you survive for your whole life.
A 60.-kilogram car travels clockwise in a
horizontal circle of radius 10. meters at 5.0
meters per second.
150 Newton is the centripetal force, when a 60.-kilogram car travels clockwise in a horizontal circle of radius 10. meters at 5.0 meters per second.
centripetal force F=mv²/r
m=60 kg
v=5 m/s
r= 10 m
F=mv²/r
F=60×5×5÷10
F=150 N
Any movement along a curved path accelerates, making applying force to the path's center of curvature necessary. This force is known as centripetal, which means "center seeking."
According to the Centripetal Force Formula, the centripetal force is equal to the product of the radius (in meters) and the square of the tangential velocity (in meters per second) (in meters). With a doubling of tangential velocity, this formula predicts that the centripetal force will also double.
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April enters a race she runs leftward 100m to her horse then she rides 500 m to her truck then she drives 1000m in a total time of 120s what is Aprils average velocity over the 120s period
The average velocity of April, knowing that she runs leftward 100 m to her horse then she rides 500 m to her truck then she drives 1000 m in a total time of 120 s is 13.33 m/s
How do I determin the average velocity?We know that average velocity is the total displacement travelled divided by the total time. This can be written as:
Average velocity = Total displacement / total time
With the above information, we'll begin our calculation by obtaining the total displacement. This is illustrated below:
Displacement leftward = 100 mDisplacement using horse = 500 mDisplacement using truck = 1000 mTotal displacement = ?Total displacement = 100 + 500 + 1000
Total displacement = 1600 m
Finally, we shall determin the average velocity. This is shown below:
Total displacement = 1600 mTotal time = 120 sAverage velocity =?Average velocity = Total displacement / total time
Average velocity = 1600 / 120
Average velocity = 13.33 m/s
Thus, the average velocity is 13.33 m/s
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What is the density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml?.
The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.
Density :
The degree to which matter is packed together is essentially measured by density.Its symbol is ρ.Density is commonly expressed in units of grams per cubic centimetre.Density is calculated as:
Density = mass/volume
ρ = m/v
where,
ρ = density of the substance
m = mass of the substance
v = volume of the substance
ρ = m/v
ρ = 20.0/4.0
ρ = 5g/ml
so, density is 5g/ml.
The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.
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find the present value of ordinary annuity $3000 per semiannual period for 6 years at 11%/year compounded semiannually.
The present value of an ordinary annuity $3000 per semiannual period for 6 years at 11% interest rate is $25,855.55
The present value of an ordinary annuity is given by:
P = PMT x [1 - (1 + r)⁻ⁿ] / r
Where:
P = present value
PMT = amount of annuity payment per period
r = interest rate per period
n = number of periods
Since it is semiannually compounded, the number of periods per year = 2. Therefore,
r = 11%/2 = 0.055
n = 2 x 6 years = 12
PMT = 3000
Hence,
P = 3000 x [1 - (1 + 0.055)⁻¹²] / 0.055
P = 25,855.55
Hence, the present value is $25,855.55
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An airplane is flying in a horizontal circle at a
speed of 105 m/s. The 87.0 kg pilot does not
want the centripetal acceleration to exceed
6.27 times free-fall acceleration.
Find the minimum radius of the plane's
path. The acceleration due to gravity is 9.81
m/s².
Answer in units of m.
The minimum radius of the plane's path found using the expression of centripetal acceleration is 179.24 m
What is centripetal acceleration?
When an object moves in uniform circular motion, it will experience an acceleration. This acceleration is of the type that changes its direction, rather than its speed. We call this type of acceleration, centripetal acceleration.
The centripetal acceleration is given by.
a = v^2/r
Where a= centripetal acceleration
v = velocity
R = radius
In the given question we are given,
v = 105 m/s/s
a = 6.27 times free-fall acceleration
= 6.27 x 9.81 m/s/s
Obtaining the expression for the radius.
a = v^2/r
r = v^2/a
= 105 x 105/ 9.81 x 6.27
= 179.24 m
Hence, the minimum radius of the plane's path is 179.24 m
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The Tesla Model S Electric vehicle can go from 0 to 60 mi/hr (26.8 m/s) in only 1.9 seconds! How far does it move from rest until it reaches 60 mi/hr? Round your answer to the nearest whole meter.
Answer:
The Tesla moves approx. 25 meters from rest before reaching 60 mi/hr
Explanation:
Given:
Initial velocity = 0 m/s
Final velocity = 26.8 m/s
Time = 1.9 seconds
Acceleration = change in velocity/time
[tex]a = \frac{26.8}{1.9}[/tex]
The equation to find displacement (Δx) with given starting and final velocity, time, and acceleration is:
[tex]x = x_{0} + v_{0}t + \frac{1}{2} at^{2}[/tex]
Starting position and initial velocity both equal 0, so
[tex]x = \frac{1}{2} at^{2}[/tex]
[tex]x=\frac{1}{2} (\frac{26.8}{1.9})(1.9)^{2}[/tex]
x = 25.46m
Rounded to the nearest whole number, x = 25m
Students performed an investigation on how aluminum cans taken to a recycle center were able to be reused. They found out an aluminum can undergoes which type of change?.
Answer:
below
Explanation:
When it is melted , the can undergoes a phase change from a solid to liquid.
a horizontal 2.0-kgkg rod is 2.0 mm long. an 7.0-kgkg block is suspended from its left end, and a 5.0-kgkg block is suspended from its right end. part a determine the magnitude of the single extra force necessary to keep the rod in mechanical equilibrium. express your answer with the appropriate units. ff
The magnitude of a single extra force necessary to keep the rod in its mechanical equilibrium is 20N in the same direction with the 5.0kg blocks' weight force.
A system is in the mechanical equilibrium when it is at rest and the resultant of the force working on the system is equal to zero (0) or no movement happen within the system.
Please take a look at the drawing below.
The existance of 2 blocks attached to each of the rod's ends are enable the rod to move in a circular form. Hence, we could conclude that both of the blocks are giving centripetal forces to the rod.
Centripetal force is the force that works in a system and make a system to move within the curved path. The direction of this force is always perpendicular to the system fixed center point.
On the case, the center point is the center of gravity of rod, where the weight force (W) working in the system. Assuming that the rod is a symetrical solid rod, hence the center point is exatcly at the middle of the rod.
Both of the blocks are giving weight forces to the system with their mass. However since they are differences on their mass, their weight forces are also working differently.
Both of the blocks are working to the system and moving the system into their respective direction, which are the opposite of each other.
Hence, we could conclude that we need to give extra force into one of the block's force direction to balance all the forces working in the system.
Because we want the system to be in its mechanical equilibrium, we have to use the First Law of Newton where the force resultant of the system must be equal to zero (0).
We could write the equation for this system:
∑F = 0
Fs1 - Fs2 + Fs3= 0
(W1 × 1) - (W2 × 1) + (F3 × 1) = 0
(7×10×1) - (5×10×1) + F3 =0
70 - 50 + F3 = 0
F3 = - 20N
Hence, we need to give an extra 20N force in the same direction with the 5.0kg blocks' weight force to make system reaches its mechanical equilibrium.
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At which point is potential energy being transformed to kinetic energy
Point at which potential energy is being transformed to kinetic energy is point F.
When is potential energy converted to kinetic energy?An object has potential energy when it is not in motion. Once a force has been applied, the potential energy changes to kinetic energy.
When an object is released from height, it is naturally pulled down towards the ground by the force of gravity. Object falls towards the ground as potential energy transforms into its kinetic energy.
Potential energy becomes kinetic when the object storing the potential energy starts to move. Since the potential energy is stored in the object, movement would release the energy.
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Explain why so many women and children worked in the industrial labor force, and describe the treatment they received.
Men felt they had fewer women and children because they thought they could rule the world because of their gender, so they had to abuse them.
What is gender?Gender is the socially constructed characteristics of women, men, girls and boys. This includes the norms, behaviors and roles associated with being a woman, man, girl or boy. As a social structure, gender differs from society to society and can change over time. Gender is the range of characteristics that relate to and distinguish between feminine and masculine. Most cultures use a binary her gender where gender is divided into two categories of her and people are viewed as part of one or the other. People outside of these groups may fall under the general term non-binary.To learn more about gender from the given link :
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Which option is correct, why and explain in detail?
Compared to the initial velocity, the velocity of the ball at the maximum height is zero m/s.
What is motion under gravity?We know that in the gravitational field, there is a force that acts to either accelerate or decelerate a body. If the body is accelerated, then the object must be moving in the same direction as gravity, that is, the object is moving downwards.
If the object is decelerated then the object is moving in a direction that is opposite to gravity, then the motion of the object must be slowed down continuously until the object is gradually brought to a stop.
When we through a ball upwards at a given speed, the speed of the ball would continue to decrease until the ball would eventually attain a minimum speed of zero at the maximum height.
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racing greyhounds are capable of rounding corners at very high speeds. a typical greyhound track has turns that are 45 m diameter semicircles. a greyhound can run around these turns at a constant speed of 12 m/s .what is its acceleration in units of g ?
Using the concepts of centripetal force, we got that 6.4m/sec² is the acceleration for a greyhound who can run around these turns in the typical greyhound track has turns that are 45 m diameter semicircles.
We are having some quantities:
Diameter of the semicircle, d = 45 m
Radius of the semicircle, r = 22.5 m
Speed of greyhound, v = 12 m/s
The greyhound is moving under the action of centripetal acceleration. Its formula is given by :
a=(v²)/r
where v is the velocity of moving object and r the radius of the semicircle.
Putting the values, we get
=>a=[(12)×(12)]/22.5
=>a=[144/22.5]
=>a=6.4m/sec²
Hence, the racing greyhounds are capable of rounding corners at very high speeds. a typical greyhound track has turns that are 45 m diameter semicircles. a greyhound can run around these turns at a constant speed of 12 m/s, the acceleration in units of 6.4m/sec².
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(f) if this system is set up in a laboratory and the acceleration of the 1.5 kg block is experimentally determined, the experimental value is found to be smaller than the value calculated above. if the given value for the coefficient of friction is correct and air resistance is negligible, explain briefly, but specifically, why the experimental value of the acceleration is smaller.
Answer:
help!!
Explanation:
Question 2 of 10
A scientist measures the growth of a bamboo plant over time. The table
below shows the results.
Time (hours)
A. 2.40 cm
B. 2.25 cm
10
OC. 2.10 cm
D. 2.55 cm
20
30
40
50
60
Height (cm)
1.2
1.5
1.8
What is the best inference for the height of the plant after 45 hours?
2.1
2.4
2.8?help
After 45 hours, the plant's height is 2.25 cm.
Given:The bamboo plant is 2.1 cm tall after 40 hours.
The bamboo plant has grown to a height of 2.4 cm after 50 hours.
Bamboo plant height after 45 hours =?
40 and 50 hours are separated by 2.4 to 2.1 cm.
= 0.3 cm
50 divided by 40 equals 45.
The height will therefore increase by 0.3/2 = 0.15 cm after 45 hours.
Height at 45 hours is equal to 2.25cm (2.1 + 0.15cm).
As a result, the plant is 2.25 cm tall after 45 hours.
How much bamboo grows each hour?1.5 in. per hour
Some bamboo species have been known to grow up to 2.91 feet every day, or 1.5 inches per hour, according to Guinness World Records! .
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Quarks are only inside of protons
In 1964 Gell Mann and Zweig introduced a baryonic triplet consisting of three hypothetical particles that are termed as Quarks.
The quark model is able to explain many features of elementary particles and gives a good insight into the structure of baryons and mesons.
Quarks are the fermions as the basic building block if we use fermions then we can get fermions and bosons. These bosons are assumed as antiquark pairs.
Actually the three quarks proposed are - up quark (u) , down quark(d), strange quark (s)Quarks and antiquarks have fractional charge . For example u quark ,[tex]q= e(1/2 +1/2*1/3 +1/2*0)\\=+2/3 e[/tex]Quarks have no internal structure as they are point particles.Hadron like proton is composed of three quarks.Quarks are found in protons but can't say quarks are only found in protons. Because evidently quarks and gluons are basic building blocks of protons as wells as neutrons.To study more about quarks-
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The formula for electrical power is p = i v. Which is the equivalent equation solved for i? startfraction p over v endfraction = i startfraction v over p endfraction = i p v = i p minus v = i.
The equivalent formula for p = iv is the startfraction p over v endfraction = i
In physics, power measures the rate of transfer of electrical energy through a circuit per unit of time. It is denoted by P and is measured using the SI unit of power (watts or 1 joule/second). Electrical energy is usually supplied by batteries and produced by generators.
There are three types of power, true, reactive, and apparent, which are related in trigonometric form. This is called the power triangle. A power triangle that relates apparent power to active and reactive power. Power is measured in watts. One watt equals one joule per second.
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two construction cranes are each able to lift a maximum load of 10000 n to a height of 150 m. however, one crane can lift that load in 1 4 the time it takes the other. how much more power does the faster crane have?
2P1 means the faster crane have double power compared to the first crane between two construction cranes are each able to lift a maximum load of 10000 n to a height of 150 m.
Maximum load means the weight of the load declared permissible by the competent authority of the country of registration of the vehicle; "Permissible maximum weight " of a vehicle means the weight of the vehicle and its maximum load when the vehicle is ready for the road.
A crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally.
work done by p1 = m*g*h
= 2*10^4*100
power p1 = 2*10^6 /t
power p2 = 2*10^6 /(t/3)
=3(2*10^6/t) = 3p1
s0, faster crane have (3p1-p1) = 2p1
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a .5 kg steel ball is suspended from the ceiling by a 2.5 m long string. the ball is pulled to the side until it is 1 m above its lowest point and then released from rest. the tension in the string when the ball passes through its lowest position is
The string when the ball passes through its lowest position is 5N.
Solution:
Tension on the ball, T = mg
T = 0.5*9.8 = 4.9
Approximately equal to 5N.
At the highest point, there is less weight more centrifugal force, and no tension. So the stress at the bottom point is 6 mg which is zero as described for the top point. The rope tension is always directed toward the center of the circle. The following means that tension is up while gravity is down. Zero voltage is loose.
Strings and ropes are often idealized as having length but no mass and no cross-section. Most players are familiar with the general principle that less tension means more power, and more tension means more control. Strings with lower tension stretch more on impact and store more energy. When the ball bounces off the racquet it returns more energy and launches it at a higher velocity.
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A graph titled Position versus Time shows time in seconds on the x axis, numbered 0 to 5, and position in meters on the y axis, numbered 0 to 15. The graph is a straight line from the (0, 3) to (4, 15).
Based on the information presented in the graph, what is the velocity of the object?
Answer:
3 m/s
Explanation:
distance (rise) over time (run) gives speed, that is velocity
it can be found using the gradient (m) formula
m=(y2-y1)/(x2-x1)
m=(15-3)/(4-0) =12/4=3 m/s
Answer:
3 m/s
Explanation:
.....as the answer for your question is 3m/s ..
THANK YOU..
a car on a level road turns a quarter circle ccw. you learned in chapter 8 that static friction causes the centripetal acceleration. the work done by static friction is
The work done by static friction is zero.
Friction is nothing but a opposing force applied in the opposite direction of the force applied.
Also workdone is also a result of the force applied and the distance object has moved.
In this question the car turns a quarter circle ccw , so the static friction can be balanced by the centripetal force. but workdone will be
W = F * d cos Ф
where d is the distance and Ф is the angle between force and motion. In this case, since force and motion are perpendicular so Ф will be 90 degree.
so,
W = F * d * cos90
since cos90 = 0
so W = 0
Hence the workdone will be zero.
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A passenger on a ferris wheel moves in a vertical circle at constant speed. Are the forces on her balanced?.
In order to prevent the Ferris wheel from accelerate, the forces must be balanced. Newton's first law of motion states that unless an unbalanced force acts upon a body.
it will remain in its state of rest or uniform motion. The Ferris wheel moves at a consistent speed in a vertical circle, as stated in the question. Unbalanced force is what happens when two forces operating in opposition to one another on a body are not of the same size and magnitude and accelerate.
Keep in mind that the constant speed implies that the forces are in balance, as the Ferris wheel would accelerate under an unbalanced force.
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a wire carrying a current is normally charged
Current is known as the rate of flow of charges that is electrons. While the electrons move through the wire, the number of positive charges is equal to the number of negative charges formed due to motion. Therefore, a wire carrying is normally charged neutral.
An electric current is a circulation of charged particles, consisting of electrons or ions, moving through an electrical conductor or space. it's miles measured because of the net fee of going with the flow of electric price via a floor or right into a controlled quantity. The moving debris is referred to as charge companies, which may be one of the numerous forms of particles, depending on the conductor. In electric-powered circuits, the rate providers are frequently electrons moving through a twine. In semiconductors, they may be electrons or holes. In an electrolyte the rate providers are ions, at the same time in plasma, ionized gasoline, they're ions and electrons.
The SI unit of electrical modern-day is the ampere or amp, which is the waft of electrical fee across a surface at the charge of one coulomb in keeping with the second.
The ampere (image: A) is an SI base unit. electric modern-day is measured by the usage of a tool called an ammeter. electric powered currents create magnetic fields, that are used in cars, generators, inductors, and transformers. In everyday conductors, they motivate Joule heating, which creates light in incandescent light bulbs. Time-varying currents emit electromagnetic waves, that are used in telecommunications to broadcast facts.
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we use plane mirror to see our face in dailylife why
Answer:
Because in mirror we can see our face and our getup in daily life.
Answer:
because as we know plane mirror as concave mirror ,when person keeps his/her face between focus and the pole of the mirror it forms virtual image of his/her face
which is enlarged
Why aren’t there solar and lunar eclipses every month?
A. Because clouds in Earth’s atmosphere block the Moon’s shadow.
B. Because of the gravitational effects of Jupiter on the Sun.
C. Because the Moon’s orbit is tilted with respect to Earth’s orbit.
D. There are, it’s just that we cannot detect all of them.
There solar and lunar eclipses aren't every month because the Moon’s orbit is tilted with respect to Earth’s orbit.
What is solar eclipse?When the moon passes between the sun and the Earth, a solar eclipse occurs. As a result, the moon creates a shadow on the Earth by preventing the sun's light from reaching its surface. This takes place in new moon. Up to five solar eclipses can be seen annually.
What is lunar eclipse?When Earth passes between the sun and the moon, a lunar eclipse occurs. As a result, the Earth's shadow falls over the moon, preventing the moon from receiving light from the sun. It happens on a full moon day. Up to three lunar eclipses can be seen annually.
The plane of the Moon's orbit around the Earth is tilted by around 5.15° in relation to the plane of the Earth's orbit around the Sun. That's way, there aren't solar and lunar eclipses every month.
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An object is hung by two cables at an angle. Which of the following is ALWAYS true when it is at rest?
Your answer:
The tension force (FT) is equal to the weight (Fg) of the object
The weight (Fg) is equal to the sum of the tensions in both wires
The vertical tension force (FTy) is half the weight (Fg)
The weight is equal to the sum of the two vertical tension forces (FTy)
The weight or force due to gravity (Fg) is equal to the sum of the tensions in both wires.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Frictional force allows the ball to stay in the hand while muscular force is employed to stop the motion of the ball during catching. Throughout this activity, the Earth's gravitational pull on the ball is constant.
The weight or force due to gravity (Fg) is equal to the sum of the tensions in both wires.
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Why can’t we see planetary transits from planets in our solar system other than Mercury and Venus?
A. Because only Mercury and Venus orbit closer to the Sun than we do.
B. Because no other planets are large enough to see from Earth.
C. We can see transits from all of the planets in our solar system.
D. Nobody knows; it’s a complete mystery.
Answer:
A. Because only Mercury and Venus orbit closer to the Sun than we do.
Explanation:
From the earth, the only planetary transits we can see are those of Mercury and Venus, because those are the only planets that can be between us and the sun.
Answer:
a) Because only Mercury and Venus orbit closer to the Sun than we do.
Explanation:
We can’t see planetary transits from planets in our solar system other than Mercury and Venus because, only Mercury and Venus orbit closer to the Sun than we do. Hence, the option (a) is correct.