A siren has a frequency of 899 hz when it and an observer
A siren has a frequency of 899 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1151 Hz.
(a) Is the observer moving toward or away from the siren?
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a siren has a frequency of 899 hz when it and an observer are both at rest the observer then starts to move and finds
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