In the following situations a light is being directed towards you by the object
ID: 2011385 • Letter: I
Question
In the following situations a light is being directed towards you by the object described. In which of the following will you (the observer) see a LOWER frequency (a redshift) than what the source is emitting? Choose all that apply.A police car is moving away from you while traveling 50 mph. You are moving towards it while traveling 40 mph.
A fire truck is moving towards you while traveling 50 mph. You are moving towards it while traveling 40 mph.
An ambulance is circling you. You are stationary.
A train is stationary. You are moving away from it while traveling 40 mph.
A flying saucer is moving towards you while traveling 50 ft/min. You are moving towards it while traveling 40 ft/min.
Explanation / Answer
ANS: A police car is stationary. You are moving towards it while traveling 40 mph. A fire truck is moving towards you while traveling 50 mph. You are moving away from it while traveling 40 mph. An ambulance is moving away from you while traveling 40 mph. You are stationary. A train is circling you. You are stationary. for the doppler effect to observe there should be RELATIVE MOTION BETWEEN THEM
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