You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 6 cm wide and 7 mm high. You must move your hand up and down once,
A) the same distance up as before, but take a shorter time.
B) the same distance up as before, but take a longer time.
C) a smaller distance up, but take a shorter time.
D) a greater distance up, but take a longer time.
E) a greater distance up, but take the same time.

Question

Quizplus · Accepted Answer

In order to produce a wave pulse that is higher and wider, you need to produce a larger disturbance on the string. Therefore, you need to move your hand a greater distance up than before. However, since the pulse is also wider, you will need to take a longer time to produce the pulse. Consequently, choice D is the correct answer.

You Are Holding on to One End of a Long