A source of sound moves toward you at speed

Reference no: EM13559758

A source of sound moves toward you at speed v_s, and away from Jane, who is standing on the other side of it. You hear the sound at twice the frequency as Jane. What is the speed of the source? Assume that the speed of sound is 340 m/s.
Does anyone know how to approach this problem to get an answer of 110 m/s?

Reference no: EM13559758

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