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If heat is merely a molecular motion, what is the difference between a hot, stationary baseball and a cool, rapidly moving one?
A rechargeable battery that is completey drained of electrical energy can be completed charged by applying 2 mA of current for 1.0 hour. how much energy is the battery capable of storing
Two passenger trains A and B, each 240 mlong, pass a 40 m long railroad platform in Winnepeg. The trains are moving in opposite directions at equal speeds of 0.500cwith respect to the ground. Train A is traveling west and alltracks are perfectly stra..
A railroad car of mass 2.40 multiplied by 104 kg moving at 2.50 m/s collides and couples with two coupled railroad cars, each of the similar mass as the single car and moving in the same direction at1.20 m/s.
A certain lightbulb has a tungsten filament with a resistance of 18.0 when cold and 138 when hot. Find the temperature of the hot filament
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k and a hot reservoir, what is the temperature of the hot reservoir?
a thief stole a box with valuable article of weight lsquow and jumped down a wall of height h. before he reaches what
A train with a total mass of 2.4 × 106 kilogram rises 828 meter while traveling a distance of 76 kilometer at an average speed of 7 km/h. Obtain the energy dissipated by friction
The maximum horizontal displacement of the pendulum bob from equilibrium is 3.00 cm. Calculate the quantum number n for the pendulum
A 125 kg mail bag hangs by a vertical rope 3.3 m long. A postal worker then displaces the bag to a position 2.2 m sideways from its original position, What horizontal force is necessary to hold the bag in the new position
Object O1 is 14.5 cm to the left of a converging lens with a 12.0-cm focal length. What is the focal length of the second lens
A ball is thrown horizontally from the top of a 20-m high hill. It strikes the ground at an angle of 45 degrees. With what speed was it thrown?
an electron q -1.602 x 10-19 c is projected horizontally into the space between two oppositely charged metal plates.
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