Question 1

Which of the following is an example of an electromagnetic wave?

Accepted Answer

A) a radio wave 
B) a water wave 
C) the oscillation of a spring 
D) the vibration of a violin string 
A) a radio wave 
B) a water wave 
C) the oscillation of a spring 
D) the vibration of a violin string

Question 2

Electromagnetic waves of various frequencies reach Earth from distant parts of the universe. Which of the following can be inferred from this?

Accepted Answer

A) The wavelengths must be very short. 
B) A single material must fill all of space. 
C) These waves can travel without a medium. 
D) The speed of these waves is 300,000,000 m/s. 
A) The wavelengths must be very short. 
B) A single material must fill all of space. 
C) These waves can travel without a medium. 
D) The speed of these waves is 300,000,000 m/s.

Question 3

Which of the following has the least momentum?

Accepted Answer

A) a 0.5 kg mass with a 1000 m/s velocity 
B) a 1 kg mass with a 100 m/s velocity 
C) a 10 kg mass with an 11 m/s velocity 
D) a 100 kg mass with a 2 m/s velocity 
A) a 0.5 kg mass with a 1000 m/s velocity 
B) a 1 kg mass with a 100 m/s velocity 
C) a 10 kg mass with an 11 m/s velocity 
D) a 100 kg mass with a 2 m/s velocity

Question 4

A heated rock is placed in a container of water that is cooler than room temperature. Which of the following statements best describes what happens?

Accepted Answer

A) Cold is removed from the container of water until the rock, the container, and the water all reach the same final temperature. 
B) The heated rock loses heat to the container of water until the rock, the container, and the water all reach the same final temperature. 
C) The heated rock loses heat to the container of water until the rock, the container, and the water each reach a different final temperature. 
D) Cold is removed from the container of water until the rock, the container, and the water each reach a final temperature lower than their original temperatures. 
A) Cold is removed from the container of water until the rock, the container, and the water all reach the same final temperature. 
B) The heated rock loses heat to the container of water until the rock, the container, and the water all reach the same final temperature. 
C) The heated rock loses heat to the container of water until the rock, the container, and the water each reach a different final temperature. 
D) Cold is removed from the container of water until the rock, the container, and the water each reach a final temperature lower than their original temperatures.

Question 5

Which of the following devices relies on electromagnetic radiation in the radio wave region of the spectrum for operation?

Accepted Answer

A) sun tanning lamp 
B) electric light bulb 
C) cellular telephone 
D) electric toaster 
A) sun tanning lamp 
B) electric light bulb 
C) cellular telephone 
D) electric toaster

Question 6

What is the momentum of a metal disc with a mass of 1.5 kg sliding on a frictionless surface at 0.75 m/s?

Accepted Answer

A) 0 50. kg • m/s 
B) 0 85. kg • m/s 
C) 1 1. kg • m/s 
D) 2 0. kg • m/s 
A) 0 50. kg • m/s 
B) 0 85. kg • m/s 
C) 1 1. kg • m/s 
D) 2 0. kg • m/s

Question 7

A ball has a mass of 0.1 kg and an initial velocity of 20 m/s. The ball is given an acceleration of 30 m/s2 for 5 s.What is the net force on the ball during acceleration?

Accepted Answer

A) 0 N 
B) 3 N 
C) 10 N 
D) 15 N 
A) 0 N 
B) 3 N 
C) 10 N 
D) 15 N

Question 8

Which of the following is an example of a vector quantity?

Accepted Answer

A) A student walks 2.0 km north. 
B) An object has a mass of 10.5 kg. 
C) A 1.0 kg object moves at 18 m/s. 
D) A ball has an instantaneous speed of 15 m/s. 
A) A student walks 2.0 km north. 
B) An object has a mass of 10.5 kg. 
C) A 1.0 kg object moves at 18 m/s. 
D) A ball has an instantaneous speed of 15 m/s.

Question 9

The distance of the star Vega from Earth is 1.6 million times greater than the distance of the Sun from Earth. Which of the following best describes the gravitational influence of Vega on Earth?

Accepted Answer

A) It is roughly equal to that of the Sun. 
B) Its influence is greater than that of the Sun. 
C) Its influence is small because of its distance. 
D) It influences the magnitude of Earth's mass. 
A) It is roughly equal to that of the Sun. 
B) Its influence is greater than that of the Sun. 
C) Its influence is small because of its distance. 
D) It influences the magnitude of Earth's mass.

Question 10

Large amounts of current can damage a circuit. Which of the following changes in a series circuit will result in an increase in current?

Accepted Answer

A) The voltage is halved and the resistance is halved. 
B) The voltage is halved and the resistance is doubled. 
C) The voltage is doubled and the resistance is halved. 
D) The voltage is doubled and the resistance is doubled. 
A) The voltage is halved and the resistance is halved. 
B) The voltage is halved and the resistance is doubled. 
C) The voltage is doubled and the resistance is halved. 
D) The voltage is doubled and the resistance is doubled.

Question 11

A magnetic compass is placed near an insulated copper wire. When the wire is connected to a battery, the compass needle changes position.Which of the following is the bestexplanation for the movement of the needle?

Accepted Answer

A) The copper wire magnetizes the needle to create a force. 
B) The needle magnetizes the copper wire to create a force. 
C) The current in the wire produces a magnetic field and exerts a force on the needle. 
D) The insulation on the wire becomes energized and exerts a force on the needle. 
A) The copper wire magnetizes the needle to create a force. 
B) The needle magnetizes the copper wire to create a force. 
C) The current in the wire produces a magnetic field and exerts a force on the needle. 
D) The insulation on the wire becomes energized and exerts a force on the needle.

Question 12

What is the voltage across the terminals of a 23 ? resistor that has 0.065 A of current flowing through it?

Accepted Answer

A)  0.0028 V 
B)  0.097 V 
C)  1.5 V 
D) 350 V 
A)  0.0028 V 
B)  0.097 V 
C)  1.5 V 
D) 350 V

Question 13

A student leaving school walks 2.5 km north and then walks 1.0 km south. What is the student's displacement?

Accepted Answer

A)  1.0 km south 
B)  1.5 km north 
C)  2.5 km north 
D)  3.5 km south 
A)  1.0 km south 
B)  1.5 km north 
C)  2.5 km north 
D)  3.5 km south

Question 14

If heat is added to a liquid, which of the following occurs?

Accepted Answer

A) The friction in the liquid increases. 
B) The size of the liquid molecules expands. 
C) The potential energy of the liquid changes. 
D) The molecular motion in the liquid increases. 
A) The friction in the liquid increases. 
B) The size of the liquid molecules expands. 
C) The potential energy of the liquid changes. 
D) The molecular motion in the liquid increases.

Question 15

A car is parked on the side of a hill. Which of the following most likely prevents the car from moving down the hill?

Accepted Answer

A) The car has too much mass to move easily. 
B) There is friction in the door hinges of the car. 
C) There is friction between the tires and the road. 
D) The weight of the car is mostly on the front wheels. 
A) The car has too much mass to move easily. 
B) There is friction in the door hinges of the car. 
C) There is friction between the tires and the road. 
D) The weight of the car is mostly on the front wheels.

Question 16

A cart at the top of a hill is released and rolls down the hill. Which of the following describes the energy of the cart just as it reaches the bottom of the hill?

Accepted Answer

A) The cart has no energy. 
B) The cart has maximum kinetic energy. 
C) The cart has maximum gravitational potential energy. 
D) The cart has equal gravitational potential and kinetic energy. 
A) The cart has no energy. 
B) The cart has maximum kinetic energy. 
C) The cart has maximum gravitational potential energy. 
D) The cart has equal gravitational potential and kinetic energy.

Question 17

Which of the following observations is a result of the Doppler effect?

Accepted Answer

A) Noise from across a lake is louder at night than during the day 
B) A person walking notices that the pitch of a car's engine decreases as the car passes by. 
C) Beats are produced when two tuning forks with different frequencies are heard together. 
D) A person hears the sound from a radio more clearly in certain areas of a room than in others. 
A) Noise from across a lake is louder at night than during the day 
B) A person walking notices that the pitch of a car's engine decreases as the car passes by. 
C) Beats are produced when two tuning forks with different frequencies are heard together. 
D) A person hears the sound from a radio more clearly in certain areas of a room than in others.

Question 18

A person is using a force of 200 N to push a box. How much power does the person need to push the box a distance of 4 m in 10 s?

Accepted Answer

A) 40 W 
B) 80 W 
C) 200 W 
D) 500 W 
A) 40 W 
B) 80 W 
C) 200 W 
D) 500 W

Question 19

A racecar travels at an average speed of 80 m/s in a race. The total distance of the race is 640,000 m.How long does it take the racecar to finish the race?

Accepted Answer

A) 800 s 
B) 8,000 s 
C) 6,400,000 s 
D) 51,200,000 s 
A) 800 s 
B) 8,000 s 
C) 6,400,000 s 
D) 51,200,000 s

Question 20

Which of the following waves travels fastest?

Accepted Answer

A) water waves in oceans 
B) seismic waves in rocks 
C) sound waves from a violin string 
D) electromagnetic waves from the Sun 
A) water waves in oceans 
B) seismic waves in rocks 
C) sound waves from a violin string 
D) electromagnetic waves from the Sun

Exam 32: (AP) Physics: Introductory Physics

Which of the following is an example of an electromagnetic wave?

Electromagnetic waves of various frequencies reach Earth from distant parts of the universe. Which of the following can be inferred from this?

Which of the following has the least momentum?

A heated rock is placed in a container of water that is cooler than room temperature. Which of the following statements best describes what happens?

Which of the following devices relies on electromagnetic radiation in the radio wave region of the spectrum for operation?

What is the momentum of a metal disc with a mass of 1.5 kg sliding on a frictionless surface at 0.75 m/s?

A ball has a mass of 0.1 kg and an initial velocity of 20 m/s. The ball is given an acceleration of 30 m/s2 for 5 s.What is the net force on the ball during acceleration?

Which of the following is an example of a vector quantity?

The distance of the star Vega from Earth is 1.6 million times greater than the distance of the Sun from Earth. Which of the following best describes the gravitational influence of Vega on Earth?

Large amounts of current can damage a circuit. Which of the following changes in a series circuit will result in an increase in current?

A magnetic compass is placed near an insulated copper wire. When the wire is connected to a battery, the compass needle changes position.Which of the following is the bestexplanation for the movement of the needle?

What is the voltage across the terminals of a 23 ? resistor that has 0.065 A of current flowing through it?

A student leaving school walks 2.5 km north and then walks 1.0 km south. What is the student's displacement?

If heat is added to a liquid, which of the following occurs?

A car is parked on the side of a hill. Which of the following most likely prevents the car from moving down the hill?

A cart at the top of a hill is released and rolls down the hill. Which of the following describes the energy of the cart just as it reaches the bottom of the hill?

Which of the following observations is a result of the Doppler effect?

A person is using a force of 200 N to push a box. How much power does the person need to push the box a distance of 4 m in 10 s?

A racecar travels at an average speed of 80 m/s in a race. The total distance of the race is 640,000 m.How long does it take the racecar to finish the race?

Which of the following waves travels fastest?

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