Module 1 Test

When a 100-kg block is simultaneously pushed toward the east with 200 N and toward the west with 150 N, the combination of these forces on the block is A. 350 N east B. 350 N west. C. 50 N west. D. 50 N east.

50 N East

A high pitch is characteristic of high-frequency sound. low-frequency sound. both about equally none of the above

A high frequency sound

Newton's third law is often known as the law of A. consequences. B. what goes around comes around. C. action and reaction. D. all of the above

Action and reaction

Acceleration in a car can be accomplished by A. rotating the steering wheel. B. speeding up. C. applying the brakes. D. all of the above

All of the above

The type of waves that undergo interference are water waves. sound waves. light waves. all of the above

All of the above

The speed of travel for radio waves is A. slower, on average, than sound waves. B. always much faster than sound waves. C. at a speed that depends on frequency. D. usually at the same speed as sound waves.

Always much faster than sound waves

Which has the highest frequency? Green light. Blue light. Red light. all the same

Blue light

A heavy and a light ball are dropped at the same time from a high tower. The ball to reach the ground first, assuming no air resistance, will be the A. heavier ball. B. lighter ball. C. both together. D. none of the above

Both together

A stone is thrown vertically upward. At the top of its path, its acceleration is A. zero. B. less than 10 m/s2. C. 10 m/s2. D. more than 10 m/s2.

C. 10 m/s2

When a heavy stone thrown straight up reaches the top of its path, its velocity is A. 10 m/s and its acceleration is zero. B. 10 m/s and its acceleration is 10 m/s2. C. zero and its acceleration is 10 m/s2. D. zero and its acceleration is zero.

C. Zero and its acceleration is 10 m/s2

When a copper and iron bimetallic bar is heated, why does the bar bend toward the iron? A. Copper expands more than iron. B. Copper gets hotter before iron. C. Iron gets hotter before copper. D. Iron expands more than copper.

Copper expands more than iron

Different colors of light correspond to different light A. frequencies. B. polarities. C. intensities. D. velocities.

Frequencies

The unit of resistance is named after Isaac Newton. Michael Faraday. Georg Simon Ohm. Benjamin Franklin.

Georg Simon Ohm

The moderate temperatures of islands worldwide ha mainly to do with water's A. vast supply of thermal energy. B. poor conductivity. C. high evaporation rate. D. high specific heat capacity.

High specific heat capacity

When Pete compresses air with a tire pump, the temperature of compressed air A. remains unchanged. B. increases as work is done on it. C. drops. D. none of the above

Increases as work is done on it

If your car runs out of fuel and the engine stops running, the car coasts to a gradual stop due to A. inertia. B. gravity. C. the laws of motion. D. the principle of continuation.

Inertia

Molecules in a constant-temperature mixture of gasses have the same average A. velocity. B. kinetic energy. C. speed. D. all of the above

Kinetic energy

A valid hypothesis must be A. capable of repeating by other investigators. B. more than an educated guess. C. testable. D. all of the above

Testable

The net force acting on an object is A. most often its weight. B. the force of friction acting on it. C. the combination of all forces acting on it. D. none of the above

The combination of all forces acting on it

A distinction between force and impulse involves A. acceleration. B. time. C. distance traveled. D. velocity.

Time

The quantity that best relates to the size of an object is A. volume. B. weight. C. mass. D. none of the above

Volume

An object accelerates when it changes its direction of motion. slows down. speeds up. all the above

all of the above

Saying that water has a high specific heat capacity says that water A. absorbs a lot of energy for an increase in temperature. B. requires a lot of energy for an increase in temperature. C. releases a lot of energy in cooling. D. all of the above

all of the above

The Doppler effect is a characteristic of light waves. sound waves. water waves. all of the above

all of the above

The classic scientific method includes performing experiments. formulating general rules that organize findings. predicting the results of experiments. all of the above

all of the above

You are weightless when you A. orbit in today's space stations. B. lack a support force. C. momentarily step off a curb. D. all of the above

all of the above

A moving vehicle has speed. momentum. kinetic energy. all of these

all of these

The north pole of a magnet repels a north pole of another magnet. attracts a south pole of another magnet. both of these none of these

attracts a south pole of another magnet

Because of trapped air inside, snow is a A) good conductor. B) good insulator. C) both a good insulator and a poor conductor. D) none of the above

both a good insulator and a poor conductor.

Power is the rate at which energy changes forms. time rate of doing work. both of these none of the above

both of these

Which of the following is a transverse wave? Radio. Light. both of these none of the above

both of these

An ampere is a unit of electrical A) pressure. B) current. C) resistance. D) none of the above

current

If Earth's size somehow increased with no change in mass, your weight would A. increase. B. decrease. C. not change. D. be quite uncertain.

decrease

A coin tossed straight up moves upward, rotates, and drops. During all this time, the acceleration of the coin is first decreasing, then increasing. zero throughout its up and down motion. upward and constant. downward and constant.

downward and constant

Loud sound has a high amplitude. high frequency. long period. low frequency.

high amplitude

Heat is thermal energy that flows from high thermal pressure to low thermal pressure. high energy to low energy. hot to cold. all of the above

hot to cold

The potential energy of a raised block of ice depends on its mass and the force required to lift it. the length of the path to attain its height. its height. all of the above

its height

A moving probe in space continues in its motion due to it seeking a continued state of motion. its own inertia. very low friction. none of the above

its own inertia

Newton tells us that when objects are moved farther apart, gravitation between them is more. ever present and unchanged. less. none of the above

less

According to Newton, the farther away the Moon is from Earth, the more uncertain the force between them. constancy of the force between them. more the gravitational force between them. less the gravitational force between them.

less the gravitational force between them

A Cadillac and a Mini Cooper roll down a hill at the same speed. While rolling the heavier Cadillac has greater acceleration. momentum. impulse. all of the above

momentum

The open spaces in a crystal of ice contains vapor. nothing. trace amounts of water. none of the above

nothing

To increase the potential energy of a barbell, work is done on the weightlifter. by the barbell. on the barbell. none of the above

on the barbell

Automobile headlights are wired in series. parallel. either works as well none of the above

parallel

If you leap straight up inside a high-speed train that slows down, you land slightly ahead of your original position. at your original position. slightly behind your original position. none of the above

slightly ahead of your original position

Your weight is the gravitational attraction between you and Earth. another word for your mass. the same in all locations. a property of mechanical equilibrium.

the gravitational attraction between you and Earth.

The difference between power and work involves acceleration. velocity. distance traveled. time.

time

Falling on a mat is less damaging than falling on a hard floor due to more force of impact. time of impact. both of these none of the above

time of impact

Compared to the mass of an electron, the mass of a proton is greater. identical. very much less. very much greater.

very much greater

An object set in motion tends to remain in motion only with an applied external force. as described by Aristotle. without the need of a force. due to a force within the object.

without the need of a force