Answer
d. None of the above
Work Step by Step
We solve using process of elimination:
a. There is nothing doing work on the wave, so it is not going to gain energy.
b. We found in problem 81 that the tsunami will slow down, so this is false.
c. Frequency is directly related to velocity and inversely related to wavelength. Since both of these values decrease, frequency remains constant.
Thus, the correct answer is: d. None of the above
