Calculate the frequency and power for given problem:
Problem: A meteor is falling from space at 1500 m/s coming directly at you. Because of its irregular surface it's making a whistling sound as it falls through earth atmosphere. At a moment when it is 2.1 km over your head the frequency of 3.3 kHz and loudness of 20dB, at the meteor what is the frequency and power of this sound?
Show how you get the solution, so that I can better understand how to do it. Show all work and steps thanks.