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Calculating frequency based on velocity and sound frequency

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Taking right to be positive, if a speaker is moving at a velocity of -22 m/s while emitting a sound of frequency 1385 Hz, what frequency will you hear?

If the situation is reversed in the above problem and you are the one that is moving, what would be the answer? (Remember right is positive.)

See attached file for full problem description.

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This solution calculates speaker frequencies given velocity and sound frequencies.

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Please see the attached file for the solution.

Taking right to be positive, if a speaker is moving at a velocity of -22 m/s while emitting a sound of frequency 1385 Hz, you will hear a frequency of?

If the situation is reversed in the above problem and you are the one that ...

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