Question 1

The potential difference across a resistor is 12 V. When a current of 5 A is flowing through this resistor, what is the power used by the resistor?

Accepted Answer

A)  2.4 W 
B) 60 W 
C) 300 W 
D) 1500 W 
A)  2.4 W 
B) 60 W 
C) 300 W 
D) 1500 W

Question 2

Which of the following is an example of heat transfer by conduction?

Accepted Answer

A) sunlight heating a floor 
B) an electric stove heating an iron pan 
C) a wood stove heating nearby objects through electromagnetic waves 
D) an electric heater heating air, which rises and is replaced with cooler air 
A) sunlight heating a floor 
B) an electric stove heating an iron pan 
C) a wood stove heating nearby objects through electromagnetic waves 
D) an electric heater heating air, which rises and is replaced with cooler air

Question 3

In which of the following examples is heat transferred primarily by radiation?

Accepted Answer

A) A fan blows warm air around a room. 
B) A hot water bottle warms a person's feet. 
C) Water vapor from a shower warms the room. 
D) A spoon held near the side of a flame gets warm. 
A) A fan blows warm air around a room. 
B) A hot water bottle warms a person's feet. 
C) Water vapor from a shower warms the room. 
D) A spoon held near the side of a flame gets warm.

Question 4

A hockey player swings her hockey stick and strikes a puck. According to Newton's third law of motion, which of the following is a reaction to the stick pushing on the puck?

Accepted Answer

A) the puck pushing on the stick 
B) the stick pushing on the player 
C) the player pushing on the stick 
D) the puck pushing on the player 
A) the puck pushing on the stick 
B) the stick pushing on the player 
C) the player pushing on the stick 
D) the puck pushing on the player

Question 5

Which of the following is possible due to longitudinal waves?

Accepted Answer

A) seeing the color red 
B) getting a tan at the beach 
C) hearing the sound of the ocean 
D) riding a wave on a surfboard 
A) seeing the color red 
B) getting a tan at the beach 
C) hearing the sound of the ocean 
D) riding a wave on a surfboard

Question 6

A star suddenly explodes. Which of the following types of waves reach Earth's surface?

Accepted Answer

A) light only 
B) sound only 
C) sound followed by light 
D) light followed by sound 
A) light only 
B) sound only 
C) sound followed by light 
D) light followed by sound

Question 7

A sealed glass container holds molecules of nitrogen gas. The nitrogen molecules have increasing velocities.Which of the following will make the molecules move faster?

Accepted Answer

A) bonding the molecules together 
B) transferring heat to the molecules 
C) expanding the volume of the container 
D) decreasing the pressure in the container 
A) bonding the molecules together 
B) transferring heat to the molecules 
C) expanding the volume of the container 
D) decreasing the pressure in the container

Question 8

Visible light passes through glass. Other types of electromagnetic radiation are able to pass through other materials in a similar way. Which of the following are used in medical technology because they can pass through some parts of the human body?

Accepted Answer

A) x-rays 
B) infrared waves 
C) microwaves 
D) ultraviolet rays 
A) x-rays 
B) infrared waves 
C) microwaves 
D) ultraviolet rays

Question 9

Which of the following is a vector quantity?

Accepted Answer

A) mass 
B) force 
C) temperature 
D) kinetic energy 
A) mass 
B) force 
C) temperature 
D) kinetic energy

Question 10

Which of the following will deinitely cause a change in the velocity of a parked car?

Accepted Answer

A) The car experiences an unbalanced force. 
B) All forces acting on the car increase by 1 N. 
C) All forces acting on the car decrease by 1 N. 
D) The forces acting on the car are equal and balanced. 
A) The car experiences an unbalanced force. 
B) All forces acting on the car increase by 1 N. 
C) All forces acting on the car decrease by 1 N. 
D) The forces acting on the car are equal and balanced.

Question 11

The motor of one car is more powerful than the motor of another car. Which of the following must be true of the more powerful motor?

Accepted Answer

A) It can do work more quickly. 
B) It can operate for a longer time. 
C) It can burn fuel more eficiently. 
D) It can store more potential energy. 
A) It can do work more quickly. 
B) It can operate for a longer time. 
C) It can burn fuel more eficiently. 
D) It can store more potential energy.

Question 12

Which of the following colors of visible light has the longest wavelength?

Accepted Answer

A) red 
B) blue 
C) green 
D) orange 
A) red 
B) blue 
C) green 
D) orange

Question 13

The distance between Earth and the Moon was determined by measuring the time it took for light waves from Earth to travel to the Moon and back. Why was it not possible to use sound waves for this experiment?

Accepted Answer

A) Sound waves must move through a substance. 
B) Sound waves would change frequency on the return to Earth. 
C) Sound waves move too slowly for the technique to be accurate. 
D) Sound waves move more slowly in Earth's atmosphere than in space. 
A) Sound waves must move through a substance. 
B) Sound waves would change frequency on the return to Earth. 
C) Sound waves move too slowly for the technique to be accurate. 
D) Sound waves move more slowly in Earth's atmosphere than in space.

Question 14

Why does a plastic rod have a negative charge after being rubbed with a piece of fur?

Accepted Answer

A) The fur gives up protons to the rod. 
B) The rod gives up electrons to the air. 
C) The fur gains protons from the rod. 
D) The rod gains electrons from the fur. 
A) The fur gives up protons to the rod. 
B) The rod gives up electrons to the air. 
C) The fur gains protons from the rod. 
D) The rod gains electrons from the fur.

Question 15

Which of the following must be included with magnitude to represent a vector?

Accepted Answer

A) mass 
B) direction 
C) acceleration 
D) volume 
A) mass 
B) direction 
C) acceleration 
D) volume

Question 16

In a large room, a sound wave traveling from a violin produces a tone with a frequency of 264 Hz. The speed of sound in the room is 340 m/s.What is the wavelength of the sound wave from the violin?

Accepted Answer

A)  0.004 m 
B)  0.80 m 
C)  1.3 m 
D)  2.6 m 
A)  0.004 m 
B)  0.80 m 
C)  1.3 m 
D)  2.6 m

Question 17

A student touches a metal sink with her finger and notices that her finger feels cold. Which of the following statements explains this observation?

Accepted Answer

A) Heat energy flows from the student's finger to the metal sink. 
B) Heat energy flows from the metal sink to the student's finger. 
C) The student's finger was originally at the same temperature as the sink. 
D) The student's finger was originally at a lower temperature than the sink. 
A) Heat energy flows from the student's finger to the metal sink. 
B) Heat energy flows from the metal sink to the student's finger. 
C) The student's finger was originally at the same temperature as the sink. 
D) The student's finger was originally at a lower temperature than the sink.

Question 18

A sailboat travels 35 km in 5 hr. Which of the following describes the motion of the sailboat?

Accepted Answer

A) Its momentum is 7 km/hr. 
B) Its acceleration is 7 km/hr. 
C) Its displacement is 7 km/hr. 
D) Its average speed is 7 km/hr. 
A) Its momentum is 7 km/hr. 
B) Its acceleration is 7 km/hr. 
C) Its displacement is 7 km/hr. 
D) Its average speed is 7 km/hr.

Question 19

Which of the following statements best explains why it is usually easier to keep a sliding object moving than it is to start the object moving?

Accepted Answer

A) Kinetic friction is typically equal to static friction. 
B) Kinetic friction is typically less than static friction. 
C) Kinetic friction is a force that resists attempts to start an object moving. 
D) Kinetic friction is a force that opposes the sliding of two objects over each other. 
A) Kinetic friction is typically equal to static friction. 
B) Kinetic friction is typically less than static friction. 
C) Kinetic friction is a force that resists attempts to start an object moving. 
D) Kinetic friction is a force that opposes the sliding of two objects over each other.

Question 20

What is the frequency of ocean waves that have a speed of 18 m/s and a wavelength of 50 m?

Accepted Answer

A)  0.18 Hz 
B)  0.36 Hz 
C)  2.8 Hz 
D)  9.0 Hz 
A)  0.18 Hz 
B)  0.36 Hz 
C)  2.8 Hz 
D)  9.0 Hz

Exam 32: (AP) Physics: Introductory Physics

The potential difference across a resistor is 12 V. When a current of 5 A is flowing through this resistor, what is the power used by the resistor?

Which of the following is an example of heat transfer by conduction?

In which of the following examples is heat transferred primarily by radiation?

A hockey player swings her hockey stick and strikes a puck. According to Newton's third law of motion, which of the following is a reaction to the stick pushing on the puck?

Which of the following is possible due to longitudinal waves?

A star suddenly explodes. Which of the following types of waves reach Earth's surface?

A sealed glass container holds molecules of nitrogen gas. The nitrogen molecules have increasing velocities.Which of the following will make the molecules move faster?

Visible light passes through glass. Other types of electromagnetic radiation are able to pass through other materials in a similar way. Which of the following are used in medical technology because they can pass through some parts of the human body?

Which of the following is a vector quantity?

Which of the following will deinitely cause a change in the velocity of a parked car?

The motor of one car is more powerful than the motor of another car. Which of the following must be true of the more powerful motor?

Which of the following colors of visible light has the longest wavelength?

The distance between Earth and the Moon was determined by measuring the time it took for light waves from Earth to travel to the Moon and back. Why was it not possible to use sound waves for this experiment?

Why does a plastic rod have a negative charge after being rubbed with a piece of fur?

Which of the following must be included with magnitude to represent a vector?

In a large room, a sound wave traveling from a violin produces a tone with a frequency of 264 Hz. The speed of sound in the room is 340 m/s.What is the wavelength of the sound wave from the violin?

A student touches a metal sink with her finger and notices that her finger feels cold. Which of the following statements explains this observation?

A sailboat travels 35 km in 5 hr. Which of the following describes the motion of the sailboat?

Which of the following statements best explains why it is usually easier to keep a sliding object moving than it is to start the object moving?

What is the frequency of ocean waves that have a speed of 18 m/s and a wavelength of 50 m?

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