A bat is flying toward a cave wall at 27.0 m/s. What is the frequency of the reflected sound that it hears, assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.
A) 60.9 kHz
B) 56.5 kHz
C) 61.3 kHz
D) 56.1 kHz

Question

Quizplus · Accepted Answer

The frequency of the reflected sound can be calculated using the Doppler effect formula for sound. The frequency heard by the bat is given by f' = f * (v + v_b) / (v - v_b), where f is the emitted frequency, v is the speed of sound, and v_b is the speed of the bat. Substituting the given values, f' = 52.0 kHz * (341.5 + 27.0) / (341.5 - 27.0) = 60.9 kHz.

A Bat Is Flying Toward a Cave Wall at 27