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A skydiver of mass m, jumps from an aircraft at an altitude of hmetres, with an initial speed of 0 m/s. She opens her parachute and lands with a final speed of v m/s. Which expression is equal to the energy dissipated by air resistance during the jump?
suppose that 1.00g of ydrogen is seperated into electrons andprotons. supoose also that the protons are placed at theEarth's North Pole, What is the resulting compressional force on the Earth
A 5.01E+4 kg space probe is traveling at a speed of 12600 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed, What is the final speed of the probe?
A space shuttle, in a 300km high orbit, releases a 100 kg payload attached by a 10 km long massless rope. Assuming initial motions of lowering payload have damped out and the shuttle and payload are flying in steady state conditions.
A solid, uniform cylinder of mass M = 0.641kg and radius R = 5.08cm rolls at a center-of-mass speed of 0.254 m/s without slipping on a horizontal surface toward a ramp that makes an angle of 25? with respect to the horizontal
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
A small compass is held horizontally, the center of its needle a distance of 0.140 m directly north of a long wire that is perpendicular to the earth's surface, What direction does the current in the wire flow, toward or away from the earth's surfa..
114.0 g of water is heated using 67.0 W of power with perfect efficiency. How long will it take to raise the temperature of the water from 15 C to 25 C
If 40 g of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? Explain how much ice must melt in order to cool the hot water down to this temperature?
On an air track, a 398.0 g} glider moving to the right at 2.05 m/s} collides elastically with a 501.5 g} glider moving in the opposite direction at 3.20 m/ s} .
A basketball player is standing on the floor 10.0 m from the basket, What is the acceleration of the basketball at the highest point in its trajectory
In diving to a depth of 527 m, an elephant seal also moves 937 m due east of his starting point. What is the magnitude of the seal's displacement?
Suppose that a police car on the highway is moving to the right at 30 m/s, while a speeder is coming up from almost directly behind at a speed of 31 m/s, both speeds being with respect to the ground. The police officer aims a radar gun at the speeder..
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