Chemistry, 30.10.2021 14:00 davidrodriguez122001
Numerical Problems: a A person shouts loudly at the mouth of a well facing towards the water. The echo is heard clearly after 0.2 seconds. What is the distance between the person and the surface of water? [Velocity of sound in air = 332 m/s]
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Numerical Problems: a A person shouts loudly at the mouth of a well facing towards the water. The ec...
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