A police car has a frequency that normally makes a 1000 Hz tone. Calculate the following detected frequencies (f') for these situations:
A. When you are rest but the police car is moving toward you at 25 m/s.
B. When the police car is moving toward you at 25 m/s and you are moving away from it at 20 m/s.
C. When you and the police car are moving toward each other at 30 m/s.
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