Afire engine is rapidly approaching the corner. explain what happens to the frequency of the sound wave as the fire engine draws closer. what do you hear?

Increases

Explanation:

The apparent change in the frequency of sound as there is a relative motion between the sorce and the observer is called doppler effect.

If the source of sound comes closer to the stationary observer, the frequency of sound increases.

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)