The diagram below shows two longitudinal waves, wave X and wave Y, at one instant of their motion. Each oval represents a particle acted on by the energy of the wave as it moves from left to right. The number of ovals carrying wave X is equal to the number of ovals carrying wave Y.

Comparing the two, it appears that wave X has a greater _ than wave Y.
A.
wavelength
B.
amplitude
C.
period
D.
frequency

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?