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A student drops two metallic objects into a 32 g steel container holding 169 g of water at 29C. One object is a 486 g cube of copper that is initially at 58C, and the other is a chunk of aluminum that is initially at 6.9C. To the student’s surprise, the water reaches a final temperature of 29C, precisely where it started.
What was themass of the aluminumchunk?
Assume the specific heat of aluminum is 900 J/kg* C and of copper 387 J/kg* C.
Consider a person on the moon who launches herself into a standing broad jump at 45 degrees. The average force generated during launching is, compute the maximum height of the jump
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The "size" of the nucleus in Rutherford's model of the atom is about 1.00 fm = 1.00E-15 m. Determine (in MeV) the electrostatic potential energy of the pair of protons
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A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube.
As in problem 80, an 89-kg man plans to tow a 102000-kg airplane along a runway by pulling horizontally on a cable attached to it. compute the greatest acceleration the man can give the airplane
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A standard tournament domino is 1.5 in wide and 2.5 in long. What relative speed is required
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