A tuning for, fork A, is struck and rings with a frequency of 1000Hz, emitting a power of 4x3.14159 x10^-6
a)what is the intensity of the sound, in w/m^2, that would be measured 1.0 from the tuning fork? assume that the tuning fork approximates a point source?
b) what is the intensity level in dB of this sound?
The Attempt at a Solution
i have no clue how to work out part a. but i know the solution to part a become the value of I and then you solve for B in part b