Apoint source at the origin emits sound of frequency 175 hz uniformly in all directions. on the x-axis at x=100 m, the sound intensity is 1.40 * 10^-4 w/m^2 . 1. what is the power output of the source?
2. what is the intensity ( in si units ) on the x-axis at x=160m?
3. what is the intensity in decibels on the x-axis at x=160m? 4. a steady wind is blowing at 5.00 m/s in the positive x-direction. an observe on a bicycle at x=200 m is moving along the x-axis in the negative direction ( i. e., towards the source of sound ) at a speed of 12.0 m/s. what frequency of sound does the cyclist hear?
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