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Q. A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.3 s later. How deep is the ocean at this point? Suppose the speed of sound in seawater is 1560 m/s and does not vary extensively with depth.
Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.
An average temperature of the rest of the universe
When Capacitor C1 having voltage V is connected with another capacitor C2 having zero charge in parallel with C1 what would be the dissipated energy.
A movie stuntwoman drops from a helicopter that is 29.0 above ground and is moving with a constant velocity whose components are 8.00 upward and 18.0 horizontal and toward south. You can ignore air resistance.Where on the ground (relative to the p..
Water flowing through a 2.00cm diameter pipe can fill a 280 L bathtub in 5.0 minutes. What is the speed of the water in pipe.
A person weighing 700N on a wire. find the tension force in the two segments of the wire. left wire 20 degrees and right wire 40 degrees.
A high-speed photograph of a club hitting a golf ball. The club was in contact with a ball, initially at rest, for about 0.0028s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 1.8 102 ft/s, find out the average forc..
assume you carry a bag of groceries weighing 127 N from your car to your kitchen, a distance of 57 m, without raising or lowering the bag.
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from same point at t = 190 ms. (a) How far below the release point is the center of mass of two stones at t = 390 ms? (Neither stone has yet reached the gr..
find the period of this oscillation.
How fast should a car move toward. A cardinal (Richmondena cardinalis) of mass 3.90×10-2 and a baseball of mass 0.144 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's moment..
The linear impulse delivered by the hit of a boxer is 248 N • s during the 0.373 s of contact. What is the magnitude of the average force exerted on the glove by the other boxer? React in units of N
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