What frequency does the bat hear in the reflected wave

Reference no: EM13491370

a) A bat flies toward a wall at a speed of 5.5 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 29.0 kHz. What frequency does the bat hear in the reflected wave?

b) What is the intensity of sound at 20 dB?

Reference no: EM13491370

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