You Are Holding on to One End of a Long

Multiple Choice

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 4 cm wide but 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.