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# Quadrupling the weight suspended vertically from a coil spring will result in a change in the displacement

of the spring's lower end by what factor?

A. 1/4

B. 1

C. 4

D. 16

Four identical springs each have the same spring constant k. If these four springs are attached end to end forming a spring four times the length of one of the original springs, what will be the spring constant of the combination?

A. k/4

B. 2 k

C. k

D. 4 k

For a wave on the ocean, the amplitude is:

A. the distance between crests.

B. the height difference between a crest and a trough.

C. one half the height difference between a crest and a trough.

D. how far the wave goes up on the beach.

Which of the following is an example of a longitudinal wave?

A. sound wave in air

B. wave traveling in a string

C. both a and b

D. neither a nor b

If the frequency of a traveling wave train is increased by a factor of five in a medium where the speed is constant, which of the following is the result?

A. amplitude is one fifth as big

B. wavelength is one fifth as big

C. amplitude five times as big

D. wavelength is five times as big

A pendulum on the Earth has a period T. The acceleration of due to gravity on Mars is less than that on the Earth, and the acceleration due to gravity on the Moon is even less. Where would the period of an identical pendulum be the least?

A. on the Earth

B. on the Moon

C. on Mars

D. The period of a pendulum would be the same on the Earth, Moon, and Mars since the period depends on the pendulum's length which is the same for identical pendula.

What is the phase difference when two waves, traveling in the same medium, undergo constructive interference?

A. 270°

B. 180°

C. 90°

D. 0°

An object is attached to a spring and its frequency of oscillation is measured. Then another object is connected to the first object, and the resulting mass is four times the original value. By what factor is the frequency of oscillation changed?

A. 1/4

B. 1/2

C. 1/16

D. 4

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