How deep is the ocean beneath the ship
The speed of sound in water is 1501 m/s. A sonar signal is sent from a ship at a point just below the water surface and 2.5 s later the reflected signal is detected. How deep is the ocean beneath the ship?
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Two astronauts, one of mass 61 kg and the other 80 kg, are initially at rest in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 15 m?
The Doppler shift was first tested in 1845 by the French scientist B. Ballot. He had a trumpet player sound a 384 Hz note while riding on a flat-car pulled by a locomotive. At the same time, a stationary trumpeter played the same note.
A steel ball is dropped from a height of three meters onto a concrete floor. It bounces a large number of times but eventually comes to rest. Estimate the ball's rise in temperature.
Why is it that a car that falls from the top of a 50 story building will hit a safety net below no faster. What is the conventional name of the vector you have drawn?
Two astronauts, one of mass 65 and the other 83 , are initially at rest in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 11 ?
Why is the surface wind always directed at some angle across the sea-level isobars toward lower pressure? Why is the surface wind directed across the sea-level isobars at a greater angle in Madison than over the middle of Lake Michigan?
Both masses rotate on the table making 100 revolutions per minute. m1=m2=1kg. What is the centripetal acceleration of m1 and m2?
In systems implementation, there are two broad stages of implementation: Pre-Implementation Preparation and Post-Implementation Upkeep.
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