Question 1

Four rigid bodies have same mass and distance from their axis through center. Which object could rotate easier?

Accepted Answer

Uniform rod

Answer

Hoop

Answer

Sphere

Answer

Cylinder

Question 2

Suppose a solid sphere and a hoop are rolled up an incline plane with the same initial velocity. Which object will travel furthest up the plane?

Accepted Answer

Sphere

Answer

Both will reach the same

Answer

Hoop

Answer

Both will stop at the middle

Question 3

An ice skater spinning while her arms is out. She then put her arms in. What happens to the moment of inertia of the ice skater?

Accepted Answer

Decrease

Answer

Becomes zero

Answer

Does not change

Answer

Increase

Question 4

Why can't you open a door by pushing on its hinged side?

Accepted Answer

Lever arm is zero.

Answer

Moment of inertia is zero.

Answer

Torque is negative.

Answer

Force is zero.

Question 5

Which of the following best describes equilibrium?

Accepted Answer

The net torques and forces are equal to zero.

Answer

The net torques and forces are the same.

Answer

All forces affecting the object are equal to zero.

Answer

All torques affecting the object are equal to zero.

Question 6

A 0.350 m radius car tire is traveling at 12.0 m/s. What is the angular velocity of the car tire?

Accepted Answer

34.3 rad/s

Answer

54.3rad/s

Answer

24.3 rad/s

Answer

64.3rad/s

Question 7

A 0.500 m radius car tire is traveling at 12.0 m/s, what is its angular velocity?

Accepted Answer

24 rad/s

Answer

14 rad/s

Answer

36 rad/s

Answer

18 rad/s

Question 8

Which of the following shows the spinning motion along a fixed axis?

Accepted Answer

Rotational

Answer

Circular

Answer

Translational

Answer

Periodical

Question 9

Which of the following is the rate of change of angular velocity in rotational motion?

Accepted Answer

Angular acceleration

Answer

Arc length

Answer

Axis of rotation

Answer

Angular velocity

Question 10

Which of the following is the product of the moment of inertia and angular acceleration?

Accepted Answer

Torque

Answer

Angular momentum

Answer

Rotational motion

Answer

Angular velocity

Question 11

Which of the following is equivalent to 1 revolution?

Accepted Answer

2π rad

Answer

360 rad

Answer

10 rad

Answer

1 rad

Question 12

Which rotational kinematic quantity is equivalent to the displacement in translational motion?

Accepted Answer

Angle

Answer

Arc length

Answer

Axis of rotation

Answer

Lever arm

Question 13

Which of the following is the same as torque according to the 2nd law of rotational motion?

Accepted Answer

Rate of change in angular momentum

Answer

Arc length

Answer

Rate of change in angular velocity

Answer

Rotational motion

Question 14

Which of the following changes depends on the shape of a moving body?

Accepted Answer

Moment of Inertia

Answer

Rigid body

Answer

Arc length

Answer

Axis of rotation

Question 15

Consider a planet orbiting around the sun. If the orbital radius of the planet is doubled, how long would it take a planet to complete a revolution?

Accepted Answer

More than twice as long to orbit the Sun

Answer

The same amount of time to orbit the Sun

Answer

Less than half as long to orbit the Sun

Answer

Exactly twice as long to orbit the Sun

Question 16

A mass on a spring undergoes simple harmonic motion. What is the maximum displacement from the equilibrium called?

Accepted Answer

Amplitude

Answer

Wavelength

Answer

Frequency

Answer

Speed

Question 17

A mass M suspended from a string L undergoes SHM. Which of the following is true about the period of oscillations?

Accepted Answer

It increases with increasing length.

Answer

It increases with increasing mass.

Answer

It increases with decreasing length.

Answer

It increases with increasing amplitude.

Question 18

A simple pendulum has a period of 1 s. What is the length of the string?

Accepted Answer

1/4 m

Answer

1 m

Answer

2 m

Answer

1/2 m

Question 19

For a satellite to orbit, the right amount of tangential speed is required. What will happen if its tangential speed reaches or exceeds the escape velocity?

Accepted Answer

The satellite will go off further into space.

Answer

The satellite will stay in place.

Answer

The satellite will fall back Earth.

Answer

The satellite will fall around to Earth.

Question 20

Which of the following is TRUE?

Accepted Answer

The weight of a 40 kg box here on Earth is 392.0 Newton.

Answer

A rocket flew into space. It experiences a greater gravitational field when it is outside Earth than when it is at the Earth’s surface.

Answer

A massive object experiences a greater gravitational field than a less massive one at the same height.

Answer

The gravitational field strength experienced by a lunar rover on the moon is greater than that of the Earth because of the moon’s mass.

Question 21

A space probe was sent to the planet Jupiter. Which of the following will most likely happen to the space probe as it approaches the planet?

Accepted Answer

It will accelerate.

Answer

It will maintain its speed.

Answer

It will decelerate.

Answer

It will maintain its velocity.

Question 22

Wave is an example of an oscillation which moves repeatedly. Which of the following is the highest part of a wave?

Accepted Answer

Crest

Answer

Trough

Answer

Amplitude

Answer

Wavelength

Question 23

Which of the following describes damping force?

Accepted Answer

Resistive force

Answer

No acceleration

Answer

Similardirection

Answer

Equilibrium

Question 24

Damping force resists motion so an object stops over time. Which of the following is expelled through damping?

Accepted Answer

Heat

Answer

Equilibrium

Answer

Force

Answer

Motion

Question 25

Which of the following is FALSE?

Accepted Answer

Standing waves are produced on a string if the oscillations travel from the string.

Answer

The superposition principle is about wave interferences.

Answer

Energy on standing waves is not transferred.

Answer

Constructive interference occurs if two waves that are about to meet are in-phase.

Question 26

Marinel is waiting for a bus when firetruck speeds fast her. She noticed that the pitch of the firetruck’s siren decreases as it moves away from her. Why does this happen?

Accepted Answer

The frequency of sound decreases as the source of sound moves away from the listener.

Answer

The pitch of the firetruck’s siren decreases as the speed of the fire truck increases.

Answer

The frequency of sound increases as the source of sound moves away from the listener.

Answer

The pitch of the firetruck’s siren increases as the speed of the fire truck increases.

Question 27

Two waves are moving towards each other. Wave 1 has an amplitude of +4 and wave 2 has an amplitude of + 2. What is the total amplitude?

Accepted Answer

6

Answer

8

Answer

2

Answer

4

Question 28

Which of the following is NOT TRUE for standing wave?

Accepted Answer

It transfers energy.

Answer

It is stationary.

Answer

It corresponds to the resonant vibration of the string.

Answer

Its wave pattern does not appear to move.

Question 29

The approximate temperature of blue-colored stars is 25,000 K. Which of the following is the same as this temperature?

Accepted Answer

24,727 oC

Answer

24,984 oF

Answer

24,759 oF

Answer

20,000 oC

Question 30

A glass of water has the same temperature of the room where it is placed. A jar of chocolate has the same temperature of the room where the glass of water was placed. Therefore, the glass of water and the jar of chocolate have the same temperature. Which law of thermodynamics is being followed by the situation presented?

Accepted Answer

Zeroth

Answer

First

Answer

Second

Answer

Third

Question 31

The normal body temperature can range from 97 ^oF to 99 ^oF. Nenita’s temperature is 35.6 ^oC while Gary’s is 37.3 ^o C. Which of the two has a temperature that is not normal?

Accepted Answer

Gary and Nenita

Answer

Nenita

Answer

Neither Gary nor Nenita

Answer

Gary

Question 32

How much heat is needed to raise the temperature of a 0.25-kg water from15 ^o C to 100 ^o C?

Accepted Answer

88,952.5 J

Answer

99,982.5J

Answer

77,952.5J

Answer

88,982.5J

Question 33

Which of the following is INCORRECT about ideal gases?

Accepted Answer

They do not apply pressure.

Answer

They have negligible size.

Answer

They move in random motion.

Answer

They do not have attractive forces.

Question 34

Suppose you are to calculate the number of moles of a certain gas. The units used by the quantities P, V, and T are Pa, m³, and K respectively. What value of R are you going to use?

Accepted Answer

8.314 J/mol K

Answer

1.38× 10⁻²³J/K

Answer

62.36 L torr/mol K

Answer

0.08205L atm/mol K

Question 35

What is the pressure inside a 55 L container that holds 45 moles of gas at a temperature of 195° C?

Accepted Answer

31 atm

Answer

24 atm

Answer

28 atm

Answer

21 atm

Question 36

What does the statement “Ideal gases behave inertly” mean?

Accepted Answer

They do not react with other gases.

Answer

They collide with other gases.

Answer

They do not lose energy when they collide with other gases.

Answer

They are very unstable gases.

Question 37

Which of the following is the best example of an ideal gas?

Accepted Answer

He2

Answer

Br2

Answer

H2

Answer

O2

Question 38

Which of the following equations must be used when solving for the number of molecules of ideal gases?

Accepted Answer

PV = NkT

Answer

PV= nRT

Answer

PV= k

Answer

PV/T= k

Question 39

Whatare the equivalent values of the STP?

Accepted Answer

273 K and 101. 3 kPa

Answer

0°C and 1 mmHg

Answer

100°C and 1 atm

Answer

373K and 760 torr

Question 40

A 2.5 mole of Br₂ gas occupies 9.5 L at pressure is 6.5 atm. What is its temperature in °C?

Accepted Answer

28°C

Answer

30°C

Answer

26°C

Answer

32°C

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