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A person makes a quantity of iced tea by mixing 500g of hot tea (basically water) with an equal mass of ice at its melting point. Suppose the mixture has negligible energy exchanges with its environment. If the tea's initial temperature is Ti = 90 degrees Celsius, when thermal equilibrium is reached what are (a) the mixture's temperature Tf and (b) the remaining mass mf of ice? If Ti = 70 degrees Celsius, when thermal equilibrium is reached what are (c) Tf and (d) mf?
the mean lifetime of muons in their rest frame is 2.20us. What is the mean distance traveled before it decays
A 72 cm long, 1.0 mm diameter steel guitar string must be tightened to a tension of 1800 N by turning the tuning screws. By how much is the string stretched
find the magnitude of the electric field at a point midway between two charges 24.3 times 10-9 c and 75.5 times 10-9 c
A person pushes a 16.2-kg shopping cart at a constant velocity for a distance of 27.5 m on a flat horizontal surface. She pushes in a direction 32.3 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. (a) What is the mag..
A golf club has a lightweight flexible shaft with a heavy block of wood or metal (called the head of the club) at the end. A golfer making a long shot off the tee uses a driver, What is the speed of the club head immediately after the collision
A wheel (radius=0.20m) is mounted on a frictionless , horizontalaxis.A light cord wrapped around the wheel supports a0.50kg object. What the moment of the wheel
A pitcher throws a baseball vertically upward with an initial speed of 15.0 m/s, releasing the ball when it is 2.00 above the ground, How long is the ball in the air
A 1300kg sports car accelerates from 0m/s to 26m/s in 13s. What is the average power of the engine?
The time separating high tides is 12 hours and 25 minutes. Assume that the high tide occurs at 3:30 p.m. one afternoon. At what time will high tide occur the next afternoon
A woman stands at rest in front of a large, smooth wall. She holds a vibrating tuning fork of frequency f_0 directly in front of her (between her and the wall). She now runs toward the wall with a speed v_W. She detects beats due to the interferen..
A satellite moves in a circular orbit around Earth at a speed of 5047 m/s. Determine the satellite's altitude above the surface of Earth
A ball of mass 20 kg moves with a velocity of 2 m/s along the +x axis (call it ball A). It collides with a ball of mass 12 kg which is initially at rest (call it B), What is the final velocity of ball B
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