The Doppler effect: Putting it all together
Hungry student A hungry student working in a cafeteria decides to eat from plates of food that pass on a conveyor belt. The plates are separated by 3.0 m, and the belt moves at a speed of 9.0 m/min. (a) How many plates of food does the student eat per minute? (b) As the student’s hunger is appeased, he moves with the belt at a speed of 6.0 m/min. Determine the number of plates of food that now reach the student each minute. (This change is similar to the Doppler shift for a moving listener.)
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