28. What is the frequency observed by a runner moving at 10 m/sec, it the runner is followed by an ambulance moving at 25 m/sec in the same direction as the runner, with its siren wailing at 400 Hz? (VSOUND = 340 m/sec) %3D
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![28. What is the frequency observed by a runner moving at 10 m/sec, it the
runner is followed by an ambulance moving at 25 m/sec in the same
direction as the runner, with its siren wailing at 400 Hz? (VSOUND = 340
m/sec)
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