Question

A sonic depth gauge is placed 3.2 m above the ground. An ultrasound pulse sent downward reflects off snow and reaches the device 0.015 seconds after it was emitted. The air temperature is −20°C.

a)How far (in m) is the surface of the snow from the device? (Round your answer to at least three significant figures.)

 m

b) How deep (in m) is the snow?

 m

Answer 1