A person claps her hands while standing on the edge of a cliff overlooking a valley that is 688 m below her. If sound travels at 344 m/s in air, how much time later does she hear the echo from the sound?What is the property of sound that makes the echo possible? Choose among the ones below.Doppler EffectReflectionInterferenceDiffractionReverberation

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A person claps her hands while standing on the edge of a cliff overlooking a valley that is 688 m below her. If sound travels at 344 m/s in air, how much time later does she hear the echo from the sound?

A person claps her hands while standing on the edge of a cliff overlooking a valley that is 688 m below her. If sound travels at 344 m/s in air, how much time later does she hear the echo from the sound?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter6: Waves And Sound

Section: Chapter Questions

Problem 1PIP

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

What is the property of sound that makes the echo possible? Choose among the ones below.

Doppler Effect

Reflection

Interference

Diffraction

Reverberation

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