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The speed of a sound wave is 344 m/sec in air and 1320 m/sec in water.
a) Which medium has the higher "index of refraction" for sound?
B) What is the critical angle for a sound wave incident on the surface between air and water?
c) for total internal reflection to occur must the sound wave be traviling in the air oor in the water ?
d) use ypur result to explain why its possible to hear people on the opposite shore of river or small lake to clear?
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The Zacchini family was renowned for their human cannon ball act in which a family member was shot from a cannon using either elastic bands or compressed air. In one version of the act, Emanuel Zacchini was shot over three Ferris wheels to land in a ..
calculate the allowable internal design pressure at 72 design factor for an 18 in. pipeline wall thickness 0.375 in.
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