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Physics, 11.07.2019 19:20 keirarae2005
Ahelicopter is hovering at an altitude of 200m above the surface of the lake. a speaker on the helicopter is sending out sound waves which are reflected from both the surface of the water and bottom of the lake. if the differences in arrival times of the two echoes is measured to be 0.24s, what is the depth of the lake? (the atmospheric temperature is 20°c)
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Ahelicopter is hovering at an altitude of 200m above the surface of the lake. a speaker on the helic...
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