a constant 8-n horizontal force is applied to a 19-kg cart at rest on a level floor. if friction is negligible, what is the speed of the cart when it has been pushed 8 m?

In a perfectly inelastic collision, the final velocity of the higher-momentum object is equal to the final velocity of the lower-momentum object.

This occurs because in a perfectly inelastic collision, the two objects stick together and move as one combined object after the collision.

To understand why their final velocities are equal, let's consider the conservation of momentum in a perfectly inelastic collision.

The law of conservation of momentum states that the total momentum of a system remains constant before and after a collision, assuming no external forces act on the system. Mathematically, this can be expressed as:

(m1 + m2) * v_final = m1 * v1_initial + m2 * v2_initial

where m1 and m2 are the masses of the objects, v1_initial and v2_initial are their initial velocities, and v_final is their final velocity after the collision.

In a perfectly inelastic collision, the objects stick together, so they move with the same final velocity v_final. Therefore, the equation can be written as:

(m1 + m2) * v_final =m1 * v1_initial + m2 * v2_initial

Since the objects stick together and move as one, their masses add up (m1 + m2). Rearranging the equation, we get:

v_final = (m1 * v1_initial + m2 * v2_initial) / (m1 + m2)

As you can see, the final velocity v_final is determined by the initial velocities and the masses of the objects involved in the collision.

However, notice that both the initial velocities and masses appear in the numerator of the equation. Therefore, regardless of the initial velocities or masses, the final velocity will be the same for both objects in a perfectly inelastic collision.

In a perfectly inelastic collision, the final velocity of the higher-momentum object is equal to the final velocity of the lower-momentum object.

This is due to the conservation of momentum, where the total momentum before and after the collision remains constant. The objects stick together and move as one combined object, resulting in the same final velocity for both objects.

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K = (3/2) * 8.314 J/(mol·K) * 413 K. Calculating this expression will give us the average translational kinetic energy for one mole of gas at 413 K.

The average translational kinetic energy, K, for one mole of gas at a given temperature can be calculated using the equation:K = (3/2) * R * T
Where: K is the average translational kinetic energy

R is the ideal gas constant (8.314 J/(mol·K))

T is the temperature in Kelvin

Substituting the given values into the equation:

K = (3/2) * 8.314 J/(mol·K) * 413 K

Calculating this expression will give us the average translational kinetic energy for one mole of gas at 413 K.

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Answer:

c: long and thin resistor.

Explanation:

The resistance of a resistor is given by:

R = ρ*L/A

where:

R = resistance

ρ = resistivity (depends on the material)

L =  length of the material

A = cross-sectional area of the material

We can see that the length is on the numerator, which means that if we increase the length, then the resistance is increased.

We also can see that the cross-sectional area is on the denominator, then if we increase the area (for example, with a ticker resistor) the resistance decreases.

Then if we want to maximize the resistance, we need to have a long and thin resistor, so the correct answer is c.

Explanation:

The potential energy of the roller coaster is due to its position. It can be calculated as :

P = mgh

Where

m is mass, g is acceleration due to gravity and h is height.

The kinetic energy of an object is given by :

[tex]K=\dfrac{1}{2}mv^2[/tex]

Where

v is the speed of the object

At lowest point, the potential energy of the roller coaster is converted to the kinetic energy. So, At the bottom of the slope kinetic energy is at its maximum value and potential energy is at its minimum value. That's why the speed of the cars is at the lowest points in the ride.

We have that for the Question "Which statement explains why the fastest speeds of the car will be at the lowest points in the ride?"

option a explains why the fastest speeds of the car will be at the lowest points in the ride because potential energy decreases with decrease in height. Here the decreased potential energy is converted to the kinetic energy.

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Answer:

λ₀ = 421.2 10⁻⁹  m

Explanation:

This is an exercise in constructive interference by reflection, let's review some concepts:

* When a ray goes from a medium with a lower index to one with a higher index, it undergoes a phase change of 180º, in this case we have a phase change from the air to the film

* Within the material the wavelength changes according to the spare part index of the material

         λₙ = λ₀ / n

By including these two aspects, the constructive interference equation remains

            2 n t = (m + ½) λ₀

            λ₀ = [tex]\frac{2nt}{m+ \frac{1}{2} }[/tex]

we substitute

            λ₀ = 2 1.50 70.2 10⁻⁹ / (m + ½)

let's substitute some values ​​of m

m = 0

            λ₀ = [tex]\frac{210.06}{0.5}[/tex]  10⁻⁹

            λ₀ = 421.2 10⁻⁹  m

is in the visible range

m = 1

           λ₀ = [tex]\frac{210.6}{1+0.5}[/tex]   10⁻⁹

           λ₀ = 140.4 10⁻⁹  m

This outside visible range,    is ultraviolet light

Answer:

[tex]5.2\ \text{m/s}[/tex]

[tex]70^{\circ}[/tex] south of east

Explanation:

[tex]v_a[/tex] = 3 m/s

[tex]\theta_a[/tex] = [tex]20^{\circ}[/tex] north of east

[tex]v_b[/tex] = 6 m/s

[tex]\theta_b[/tex] = [tex]40^{\circ}[/tex] south of east = [tex]360-40=320^{\circ}[/tex] north of east

x and y component of [tex]v_a[/tex]

[tex]v_{ax}=v_a\cos \theta\\\Rightarrow v_{ax}=3\times \cos 20^{\circ}\\\Rightarrow v_{ax}=2.82\ \text{m/s}[/tex]

[tex]v_{ay}=v_a\sin\theta\\\Rightarrow v_{ay}=3\times \sin20^{\circ}\\\Rightarrow v_{ay}=1.03\ \text{m/s}[/tex]

x and y component of [tex]v_b[/tex]

[tex]v_{bx}=v_b\cos \theta\\\Rightarrow v_{bx}=6\times \cos 320^{\circ}\\\Rightarrow v_{bx}=4.6\ \text{m/s}[/tex]

[tex]v_{by}=v_b\sin\theta\\\Rightarrow v_{by}=6\times \sin320^{\circ}\\\Rightarrow v_{by}=-3.86\ \text{m/s}[/tex]

[tex]\Delta v=v_b-v_a\\\Rightarrow \Delta v=(4.6-2.82)\hat{i}+(-3.86-1.03)\hat{j}\\\Rightarrow \Delta v=1.78\hat[i}-4.89\hat{j}[/tex]

Magnitude

[tex]|\Delta v|=\sqrt{(-4.89)^2+1.78^2}\\\Rightarrow \Delta v=5.2\ \text{m/s}[/tex]

Direction

[tex]\theta=\tan{-1}|\dfrac{-4.89}{1.78}|\\\Rightarrow \theta=70^{\circ}[/tex]

The magnitude of the change in velocity vector is [tex]5.2\ \text{m/s}[/tex] and the direction is [tex]70^{\circ}[/tex] south of east.

The change in velocity will be  [tex]\Delta V=5.2\ \frac{m}{s}[/tex] and the direction will be [tex]70^o[/tex] South to east.

Any quantity which is defined by its magnitude and direction both are called as the vector quantities.

Now the data given in the question will be given as:

[tex]V_a[/tex] = 3 m/s

[tex]\theta[/tex] = [tex]20^o[/tex] north of east

[tex]V_b[/tex] = 6 m/s

[tex]\theta[/tex] =  [tex]40^o[/tex]south of east =  360-40=320 north of east

Now we will find the x and y component of [tex]V_a[/tex]

[tex]V_{ax}=V_acos\theta[/tex]

[tex]V_{ax}=3\times Cos20[/tex]

[tex]V_{ax}=2.82\ \frac{m}{s}[/tex]

[tex]V_{ay}=V_aSin\theta[/tex]

[tex]V_{ay}=3\times Sin20[/tex]

[tex]V_{ay}=1.03\ \frac{m}{s}[/tex]

Now we will find the x and y component of [tex]V_b[/tex]

[tex]V_{bx}=V_bcos\theta[/tex]

[tex]V_{bx}=6\times cos\320[/tex]

[tex]V_{bx}=4.6\ \frac{m}{s}[/tex]

[tex]V_{by}=V_bSin\theta[/tex]

[tex]V_{by}=6\times Sin320[/tex]

[tex]V_{by}=-3.86\ \frac{m}{s}[/tex]

Now change in velocity will be

[tex]\Delta V=V_b-V_a[/tex]

[tex]\Delta V=(4.6-2.82)i+(-3.86-1.03)j[/tex]

[tex]\Delta V=1.78i-4.89j[/tex]

The magnitude can be find out as follows:

[tex]\Delta V=\sqrt{(-4.89^2+(1.78^2)}[/tex]

[tex]\Delta V=5.2\ \frac{m}{s}[/tex]

The direction of the vector will be

[tex]\theta= tan^{-1}(\dfrac{-4.89}{1.78})[/tex]

[tex]\theta=70^o[/tex]

Thus the change in velocity will be  [tex]\Delta V=5.2\ \frac{m}{s}[/tex] and the direction will be [tex]70^o[/tex] South to east.

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The expression for the transverse velocity vy of a particle in the string is given by vy = -2πAf(x - vt)sin[2πλ(x - vt)].

To find the expression for the transverse velocity vy, we need to differentiate the equation y(x, t) = Acos[2πλ(x - vt)] with respect to time t. Let's proceed with the calculation step by step.

Given: y(x, t) = Acos[2πλ(x - vt)]

Differentiating y(x, t) with respect to t:

dy/dt = d/dt [Acos(2πλ(x - vt))]

Using the chain rule, we get:

dy/dt = -A(2πλv)sin(2πλ(x - vt))

Now, vy represents the transverse velocity, which is the rate of change of displacement in the y-direction (vertical direction). Therefore, we can express vy as:

vy = -dy/dt = -(-A(2πλv)sin(2πλ(x - vt))) = 2πAf(x - vt)sin[2πλ(x - vt)]

The expression for the transverse velocity vy of a particle in the string is vy = -2πAf(x - vt)sin[2πλ(x - vt)].

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Answer:

An outside thermometer reads 57°F. What is this temperature in °C? Round your answer to the nearest whole number.

14

49

71

135

answer is A:14

Explanation:

The temperature of the thermometer which reads 57 °F in degree celsius (°C) to the nearest whole number is 14 °C

We can convert from degree celsius (°C) to degree Fahrenheit (°F) with the following equation

°C = 5/9(°F – 32)

°C = 5/9(°F – 32)

°C = 5/9(57 – 32)

°C = 5/9 × 25

°C = 14 °C

Thus, the temperature in degree celsius (°C) of the thermometer is 14 °C

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An intensity level of 10^11 times the threshold of hearing (1 x 10-12 W/m2) corresponds to a decibel rating of 110 db.

What decibel level does a whisper have?

The volume of a sound is measured in decibels (dB), with a whisper being between 20 and 30 dB, boisterous conversation being around 50 dB, a vacuum cleaner being around 70 dB, a lawn mower being around 90 dB and an automobile horn at one metre being around 110 dB. Decibels are units used to measure sound volume.

An intensity level of 10^11 times the threshold of hearing (1 x 10-12 W/m2) corresponds to a decibel rating of 110 db. Thus, the intensity is 0.1 W/m2 at a distance of 2.0 m from the speaker.

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Answer:

No

Explanation:

No because like my other answer if we put to many diesels on it it will crack and little by little it will break eventually everyone will come tumbling into the water making them drown because they can't get the buckles loose or they wanted to save their families lives

a. The amplitude of subsequent oscillations is approximately 0.201 m.

b. The block's speed at a displacement of 0.35A is 0 m/s.

a. The amplitude of subsequent oscillations can be determined using the conservation of mechanical energy. Initially, the block is at rest, so its initial potential energy is zero. The kinetic energy it gains from the hammer strike is given by (1/2)mv², where m is the mass of the block (1.40 kg) and v is the velocity (converted to m/s: 46.0 cm/s = 0.46 m/s). This kinetic energy is then converted into potential energy as the block oscillates.

The potential energy stored in a spring is given by (1/2)kx², where k is the spring constant (15.5 N/m) and x is the displacement from the equilibrium position. At the maximum displacement (amplitude A), all the initial kinetic energy is converted into potential energy, so (1/2)mv² = (1/2)kA².

Now we can solve for A:

(1/2)(1.40 kg)(0.46 m/s)² = (1/2)(15.5 N/m)A²

0.32 J = 7.75 N/m A²

A² = 0.32 J / 7.75 N/m

A ≈ 0.201 m (to three significant figures)

b. The block's speed at a displacement x from the equilibrium position can be found using the principle of conservation of mechanical energy. At any point, the total mechanical energy (E) remains constant and is equal to the sum of potential energy (PE) and kinetic energy (KE).

E = PE + KE

At the point where x = 0.35A, the potential energy is (1/2)kx² and the kinetic energy is (1/2)mv².

E = (1/2)kx² + (1/2)mv²

We know the total mechanical energy E is equal to the initial kinetic energy, so we can write:

(1/2)mv² = (1/2)kx² + (1/2)mv²

Now we can solve for v:

(1/2)mv² - (1/2)mv² = (1/2)kx²

0 = (1/2)kx²

Simplifying:

kx² = 0

Since the left side is zero, this means that x = 0, indicating the block's speed is zero when it reaches a displacement of 0.35A.

a. The amplitude of subsequent oscillations is approximately 0.201 m.

b. The block's speed at a displacement of 0.35A is 0 m/s.

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Answer:

An atom is the smallest part of an element by itself, while molecules are built of multiple atoms.

Answer:

-17.5 nC

Explanation:

charge A = -30 nC

charge B = -5 nC

After adding them it would be the average of the two charges because of the getting same voltage difference. so

c = (-30+(-5)) / 2 nC

c= -17.5 nC

answer is -17.5 nC

Answer: C

Explanation:

The time for the race in which the sprinter accelerates at that rate for 20.00 m and then maintains that velocity for the remainder of a 100.00-m dash is 9.709 seconds.

Formula for time: time = distance / velocity the sprinter accelerates for the first 20.00 m and maintains that velocity for the remaining 80.00 m of the race. Let's find out the final velocity of the sprinter:

vf^2 = vi^2 + 2ad

Here, vi = 0 m/s (initial velocity),

a = 1.7 m/s^2 (acceleration),

d = 20.00 m (distance)vf^2 = 0 + 2(1.7)(20)vf^2 = 68vf = 8.246 m/s

Now, let's find out the time for the remaining 80.00 m of the race using the formula of time: time = distance / velocity time = 80.00 / 8.246

time = 9.709 s

Therefore, the time for the race in which the sprinter accelerates at that rate for 20.00 m and then maintains that velocity for the remainder of a 100.00-m dash is 9.709 seconds.

Your body is moving more quickly over the ground when you sprint. You're moving quicker over that piece of the ground under your foot. The quicker you run; the fewer times your foot touches the ground. That is basic material science.

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Answer:

20

Explanation:

20 multiplied by 2

hope i hv answered ur question

∃x ∀y P(x, y) is equivalent to ∀y ∃x P(x, y), where P(x, y) is a predicate involving variables x and y.

To demonstrate that the two statements are equivalent, let's break down their meanings:

∃x ∀y P(x, y) means "There exists an x such that for all y, P(x, y) is true."

∀y ∃x P(x, y) means "For all y, there exists an x such that P(x, y) is true."

To show their equivalence, we need to prove that if one statement is true, the other is also true, and vice versa.

Assume ∃x ∀y P(x, y) is true. This means that there exists at least one value of x such that for all possible values of y, P(x, y) is true. Now, let's consider the statement ∀y ∃x P(x, y).

Since the quantifiers are swapped, it states that for all possible values of y, there exists at least one value of x such that P(x, y) is true.

This is essentially the same as the original statement, where we have one x value that satisfies the predicate for all y values. Therefore, if ∃x ∀y P(x, y) is true, then ∀y ∃x P(x, y) is also true.

Conversely, assume ∀y ∃x P(x, y) is true. This means that for all possible values of y, there exists at least one value of x such that P(x, y) is true. Now, let's consider the statement ∃x ∀y P(x, y).

This statement states that there exists at least one value of x such that for all possible values of y, P(x, y) is true. Since we already know that for all y, there exists an x that satisfies the predicate, it is guaranteed that there exists at least one x value that satisfies the predicate for all y values. Hence, if ∀y ∃x P(x, y) is true, then ∃x ∀y P(x, y) is also true.

The statements ∃x ∀y P(x, y) and ∀y ∃x P(x, y) are equivalent. Swapping the order of the quantifiers does not change the overall meaning of the statement.

Both statements assert the existence of an x value that satisfies a predicate for all possible y values, albeit with a different syntactic structure.

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The peak magnetic field of the laser blackboard pointer is approximately 76.7 μT.  The peak magnetic field is a measure of the strength of the magnetic field associated with the laser beam.

To find the peak magnetic field, we need to use the relationship between power and magnetic field for a laser beam. The formula is given by:

B = (2 * P) / (c * A)

Where:

B is the peak magnetic field in teslas (T)

P is the average power in watts (W)

c is the speed of light in a vacuum (approximately 3.0 x 10^8 m/s)

A is the area of the beam in square meters (m^2)

First, we need to convert the average power from milliwatts (mW) to watts (W):

0.10 mW = 0.10 x 10^-3 W

Next, we need to calculate the area of the beam. The formula for the area of a circle is given by:

A = π * r^2

Where:

A is the area of the circle

π is a mathematical constant approximately equal to 3.14159

r is the radius of the circle

Given that the diameter of the beam is 0.90 mm, we can calculate the radius:

radius = diameter / 2 = 0.90 mm / 2 = 0.45 mm = 0.45 x 10^-3 m

Now we can calculate the area:

A = π * (0.45 x 10^-3 m)^2

Substituting the values into the formula for the peak magnetic field, we get:

B = (2 * 0.10 x 10^-3 W) / (3.0 x 10^8 m/s * π * (0.45 x 10^-3 m)^2)

Calculating this expression yields a peak magnetic field of approximately 76.7 μT.

The peak magnetic field of the laser blackboard pointer is approximately 76.7 μT. This calculation was based on the given average power of 0.10 mW and a beam diameter of 0.90 mm. By applying the formula relating power, area, and magnetic field, we determined the peak magnetic field.

It is important to note that this calculation assumes a Gaussian beam profile, which is commonly encountered in laser systems. The peak magnetic field is a measure of the strength of the magnetic field associated with the laser beam.

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Answer:

45

Explanation:

The mass number is 80

Proton number is 35

A-P=n

80-35=45

A rainbow is produced by the combined effects of refraction, dispersion, and internal reflection of sunlight within water droplets in the atmosphere. The correct option is D.

When sunlight passes through water droplets suspended in the air, the light is refracted, or bent, as it enters and exits the droplets. This refraction causes the different colors of light to separate due to their varying wavelengths, a phenomenon known as dispersion.

Additionally, once inside the droplets, the light undergoes multiple internal reflections before finally exiting. These reflections further separate the colors and contribute to the formation of the rainbow.

Therefore, option d, which includes refraction, dispersion, and internal reflection in water droplets, is the correct explanation for the production of a rainbow.

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With a period of 0.9 seconds, a 0.458 kilogram mass that is suspended from a spring performs simple harmonic motion. The system has a total energy of 3.4 J. The spring's force constant is roughly 0.379 N/m.

The total energy of a mass-spring system undergoing simple harmonic motion can be calculated using the equation:

[tex]$E = \frac{1}{2} k A^2$[/tex]

where k is the force constant of the spring and A is the amplitude of the motion.

Given:

Mass (m) = 0.458 kg

Period (T) = 0.9 s

Total Energy (E) = 3.4 J

We can calculate the angular frequency (ω) using the formula:

[tex]\[\omega = \frac{2\pi}{T}\][/tex]

[tex]\[\omega = \frac{2\pi}{0.9 \, \text{s}}\][/tex]

 ≈ 6.98 rad/s

The amplitude (A) can be determined using the relationship between angular frequency and period:

[tex]\[\omega = \frac{2\pi}{T}\][/tex]

[tex]\[A = \frac{\omega^2 \cdot m}{k}\][/tex]

[tex]\[A = \left(6.98 \, \text{rad/s}\right)^2 \cdot \frac{0.458 \, \text{kg}}{k}\][/tex]

To find the force constant (k), we rearrange the equation to solve for k:

[tex]\[k = \frac{\omega^2 \cdot m}{A^2}\][/tex]

Substituting the given values:

[tex]\[k = (6.98 \, \text{rad/s})^2 \cdot \frac{0.458 \, \text{kg}}{A^2}\][/tex]

Now, we can substitute the value of total energy (E) into the equation for total energy:

[tex]E = \frac{1}{2} k A^2[/tex]

[tex]\[3.4 \, \text{J} = \frac{1}{2} \cdot k \cdot A^2\][/tex]

Rearranging the equation:

[tex]\[k = \frac{2 \cdot E}{A^2}\][/tex]

Substituting the given values:

[tex]\[k = \frac{2 \cdot 3.4 \, \text{J}}{A^2}\][/tex]

Now, we can substitute the value of A obtained earlier:

[tex]\[k = \frac{2 \cdot 3.4 \, \text{J}}{(6.98 \, \text{rad/s})^2 \cdot 0.458 \, \text{kg} / k}\][/tex]

Simplifying the expression:

[tex]\[k = \frac{2 \cdot 3.4 \, \text{J} \cdot k}{(6.98 \, \text{rad/s})^2 \cdot 0.458 \, \text{kg}}\][/tex]

[tex]\\[k^2 = \frac{2 \cdot 3.4 \, \text{J}}{(6.98 \, \text{rad/s})^2 \cdot 0.458 \, \text{kg}}\]\[/tex]

[tex]\[k^2 \approx 0.144 \, \text{N/m}^2\][/tex]

Taking the square root of both sides:

[tex]\[k \approx \sqrt{0.144 \, \text{N/m}^2}\][/tex]

k ≈ 0.379 N/m

Therefore, the force constant of the spring is approximately 0.379 N/m.

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Answer:

v ≈ 4.47

Explanation:

The Formula needed = KE = [tex]\frac{1}{2}[/tex] m v²

Substitute with numbers known:

2000J = [tex]\frac{1}{2}[/tex] × 200kg × v²

Simplify:

÷100       ÷100      (Divide by 100 on both sides)

2000J = 100 × v²

[tex]\frac{2000J}{100}[/tex] =  v²

20 = v²

√         √             (Square root on both sides)

√20 = √v²

4.472135955 = v (Round to whatever the question asks)

v ≈ 4.47       (I rounded to 2 decimal places or 3 significant figures, as that is what it usually is)

Answer:

D

Explanation:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.

The Cessna 152 is a popular general aviation aircraft. To understand how the required coefficient of lift (CL) and angle of attack (AOA) change with airspeed.

We need to consider the aerodynamic characteristics of the aircraft.

1. Relationship between CL, AOA, and Airspeed:

As airspeed changes, the required CL and AOA for maintaining level flight at a specific weight in the Cessna 152 will also change. Generally, as airspeed increases, the required CL decreases, which means the AOA will also decrease.

At lower airspeeds, such as during takeoff or landing, the Cessna 152 typically operates at higher CL and AOA values. This is because the aircraft needs more lift to overcome its weight and maintain level flight or climb. For example, during takeoff, the required CL and AOA will be relatively high to generate sufficient lift at low speeds.

As the aircraft accelerates and reaches its cruise speed, the required CL and AOA will decrease. This is because the increased airspeed provides more lift and reduces the need for a high CL. In cruise, the Cessna 152 typically operates at lower CL and AOA values compared to takeoff and landing.

To provide specific examples, let's consider the Cessna 152 at a specific weight:

Takeoff: At a lower airspeed during takeoff, the required CL could be around 1.3 to 1.5, and the AOA might be around 10 to 12 degrees.

Cruise: Once the aircraft reaches its cruise speed, the required CL decreases. It could be around 0.6 to 0.8, and the AOA might reduce to around 2 to 4 degrees.

These values are approximate and may vary depending on factors such as weight, aircraft configuration, and atmospheric conditions. It's important to consult the specific aircraft's performance charts or pilot operating handbook for precise values.

CLmax Limit and Associated Speed Regime:

If the required CL exceeds the maximum lift coefficient (CLmax) of the Cessna 152's airfoil, the aircraft will no longer be able to generate sufficient lift at that particular AOA. This condition is commonly associated with the aircraft reaching its critical angle of attack (AOA), beyond which it experiences an aerodynamic stall.

In the Cessna 152, the airfoil typically exhibits a CLmax around 1.4 to 1.6. If the required CL exceeds this value, the aircraft will not be able to maintain level flight or continue to generate enough lift. This condition is often encountered during high-AOA maneuvers, such as during a go-around or during certain phases of stall recovery.

It is important for pilots to be aware of the aircraft's limitations and the associated speed regime where exceeding CLmax may occur. Proper training and understanding of the aircraft's performance characteristics are crucial to ensure safe operation.

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The net force when a force of 6N going left towards the object and the 8N going to the right towards the object ​is found to be 2N toward the right of an object.

Net force may be dfeined as the sum of all of the forces acting on an object. It is categorized as a vector quantity because it has both direction and magnitude to be considered.

Net force in a case where forces of different magnitude and opposite directions will be the difference between greater and lesser force. The combination of the resultant of all the forces acting on an object is called Net Force, which is basically the sum of all the forces acting on that object.

According to the question,

The force going towards the left of an object = 6N.

The force going towards the right of an object = 8N.

The net force = 8 - 6 = 2N towards the right of an object.

Therefore, the net force when a force of 6N going left towards the object and 8N going to the right towards the object ​is found to be 2N toward the right of an object.

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Answer:

El peso de la pieza dentro de la glicerina es 64.93 N.

Explanation:

El principio de Arquímedes nos indica que “todo cuerpo sumergido dentro de un fluido experimenta una fuerza ascendente llamada empuje, equivalente al peso del fluido desalojado por el cuerpo”.

Entonces, el peso del cuerpo dentro del fluido (peso aparente) será igual al peso real que tenía fuera de él (peso real) menos el peso del fluido que desplaza al sumergirse (peso del fluido o fuerza de empuje). Matemáticamente se expresa como:

Paparente=Preal−Pfluido

El peso del fluido desplazado o fuerza de empuje ejercida por el líquido está dada por la expresión:

Pfluido = ρliq • Vcpo • g

en donde:

Entonces, en este caso:

Paparente= 80 N - 1200 [tex]\frac{kg}{m^{3}}[/tex]* 0.001280 m³* 9.81 [tex]\frac{m}{cm^{2} }[/tex]

Resolviendo:

Paparente= 64.93 N

El peso de la pieza dentro de la glicerina es 64.93 N.

Answer:

diffraction

Explanation:

The behavior of the light incident upon this page best illustrates the phenomenon of diffraction

hope it help:)

The behaviour of such incident light on just this pages adequately exemplifies the phenomena called Diffraction. A further explanation is below.

The broadening out of waveforms when they transit through such an apertures anywhere around obstructions generally referred to as diffraction.

It happens whenever the aperture as well as obstruction seems of the equivalent order of magnitude as that of the transmitted beam's wavelength.

Thus the approach above i.e., option C is correct.

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Answer:

3m/s is the answer.

Explanation:

f = c/λ

f = frequency

c = speed (m/s)

λ = wavelength

f = c/λ

1.5 = c/2

c = 3m/s

Based on the given data, the period of the satellite is 5.7 x 104 s.

We can use Kepler's third law to find the period of a satellite. This law states that the square of the period of any planet orbiting around the Sun is proportional to the cube of the semi-major axis of its elliptical orbit. It can also be used for objects orbiting around other celestial bodies such as Earth.

The equation for Kepler's third law is:

T² = (4π²/GM) r³

T is the period

r is the average distance between the satellite and Earth's center (r = 2.56 × 107 m + 6.38 × 106 m)

G is the gravitational constant

M is the mass of Earth (5.98 × 1024 kg)

We can rearrange the equation to solve for T:

T = 2π √(r³/GM)

Substituting the values, we get:

T = 2π √[(2.56 × 107 m + 6.38 × 106 m)³/(6.6743 × 10-11 N m²/kg²) (5.98 × 1024 kg)]

Simplifying the expression,T = 5.68 × 104

So, we round the period of the satellite to 5.7 x 104 s.

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Answer:

yes

Explanation: