A sonic depth gauge is placed 5 m above the ground. An ultrasound pulse sent downward reflects
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A sonic depth gauge is placed 5 m above the ground. An ultrasound pulse sent downward reflects off snow and reaches the device 0.03 seconds after it was emitted. The air temperature is -20oC.
(a) How far is the surface of the snow from the device?
(b) How deep is the snow?
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