Question

A source emits sound with a frequency of 1000 Hz. Both it and an observer are moving in the same direction with the same speed, 100 m/s. If the speed of sound is 340 m/s, the observer hears sound with a frequency of:
A) 290 Hz
B) 540 Hz
C) 1000 Hz
D) 1800 Hz
E) 3400 Hz

Answer

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