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Physics, 30.10.2019 07:31, EndiaGracee
1. a hockey puck sliding on a frictionless surface strikes a box at rest. after the collision, the two objects stick together and move at some final speed. which of the following describes the change in momentum and energy of the puck during the collision? a. the puck loses some, but not all, of its original momentum and mechanical energy. b. the puck conserves its original momentum and mechanical energy. c. one cannot determine if the momentum or energy of the puck is conserved without knowing the final velocities and masses of the two objects. d. the puck conserves its original momentum, but loses some, but not all, of its mechanical energy. e. the puck loses some momentum in the collision but conserves its mechanical energy. f. the puck conserves its original momentum but loses all of its mechanical . which of the following describes the change in momentum and energy of the combined puck and box during the collision? a. the system conserves its original momentum but loses all of its mechanical energy. b. one cannot determine if the momentum or energy of the system is conserved without knowing the final velocities and masses of the two objects. c. the system loses some, but not all, of its momentum and mechanical energy. d. the system conserves its original momentum and mechanical energy. e. the system conserves its original momentum, but loses some, but not all, of its mechanical energy. f. the system loses some momentum in the collision but conserves its mechanical energy.
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Physics, 22.06.2019 15:20, alissalhenry
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
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1. a hockey puck sliding on a frictionless surface strikes a box at rest. after the collision, the t...
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