A fixed source of sound emitting a certain frequency appears as \( ... VIDEO
A fixed source of sound emitting a certain frequency appears as \( \mathrm{f}_{\mathrm{a}} \) when the observer is approaching the source with speed \( v \) and frequency \( f_{r} \) when the observer recedes from the source with the same speed.https://bit.ly/YTAI_PWAP https://www.pw.live
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