4,5 A grandfather clock run by a simple Pendulum is running slow. In order to ge

Question

4,5

A grandfather clock run by a simple Pendulum is running slow. In order to get the pendulum to swing faster, would you shorten or lengthen the pendulum? Why? a. shorten, since this would change the effects of gravity 'g' b. lengthen, since this would change the effects of mass 'm' c. shorten, since this would decrease the denominator 'L' d. lengthen, since this would increase the denominator 'L' A spring is compressed by 3 cm, and then it is stretched by 3 cm. Does the spring have more elastic potential energy when it is stretched or compressed? a. compressed b. stretched c. They are equal. d not enough info A sound wave is an example of what type of wave? a. longitudinal wave b. electromagnetic wave c. matter wave d. transverse wave e. seismic wave Which one of the following statements concerning waves is false? a. A wave carries energy from one place to another. b. A wave is a disturbance that travels from one place to another. c. The disturbance of particles of a medium may be in a direction that is perpendicular to the direction the wave is traveling. d. Sound waves are purely longitudinal waves. e. A wave carries particles of its medium from one place to another. Two pulses of identical shape travel toward each other in opposite directions on a string, as shown in the figure. Which one of the following statements concerning this situation is true? at The pulses will pass through each other and produce beats b As the pulses pass through each other, they will interfere destructively. c The pulses will interfere to produce a standing wave. d The pulses will reflect from each other.

Explanation / Answer

4) False statement = A wave carries particles of its medium from one place to another. (e)

5) True statement = As the pulses pass through each other, they will interfere destructively. (b)

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