For a sinusoidal wave y = A sin(kx−ωt) travelling on a given string, which statements about average power are correct?

Select all that apply

• Option A

  P̄ = ½μω²A²v.

• Option B

  P̄ is proportional to A².

• Option C

  P̄ is proportional to f for fixed amplitude and string.

• Option D

  If amplitude is doubled without changing frequency, P̄ becomes four times.