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In a game of football outdoors on a cold day, a player will begin to feel exhausted after using approximately 8.0 × 105 J of internal energy.
(a) One player, dressed too lightly for the weather, has to leave the game after losing 6.8 × 105 J of heat. How much work has he done?
(b) Another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.6 × 105 J of work. What is the magnitude of the heat that he has lost?
A 1.8 kg solid disk pulley of radius 0.11 m rotates about an axis through its center. What is its moment of inertia
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in 1910 rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil.
A hydrogen atom makes a transition from the n = 2 level to the ground state (corresponding to n = 1). Find the wavelength and the frequency of the emitted radiation
A car with good tires on a dry road can decelerate at about 5.0 m/s2 when braking. Suppose a car is initially traveling at 55 mi/h. (a.) How much time does it take the car to stop.
A 1-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 59 from the normal. After entering the glass, what is the ray's angle from the normal?
question11 the molecular mass of helium is 4 gmol boltzmannrsquos constant is 1.38066 times 10minus23 jk universal gas
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The gauge pressure at the bottom of a reservoir is 5.0 times what it is at a depth of 1.8 m. How deep is the reservoir
A laboratory technician drops a 0.0770-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. The calorimeter can, initially at 23.0°C, is made of 0.150 kg of copper and contains 0.200 kg of water. The final temperature of th..
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