Shaking a towel up and down would create what type of wave in the towel?

Question

A. Transverse <---answer (I think)
B. longitudinal
C. surface

For the medium to remain undisturbed as two pulses pass the same point, they must have
A. equal amplitudes
B. opposite amplitudes
C. different amplitudes
D. both a and b
I think it is D, but not really sure

Answer 1

you are correct on both.

Answer 2

thanks