Physics, 11.02.2020 03:20 nataliahenderso
(7c4p133) A helicopter is flying in a straight line over a level field at a constant speed of 6.0 m/s and at a constant altitude of 10.6 m. A package is ejected horizontally from the helicopter with an initial velocity of 13.0 m/s relative to the helicopter, and in a direction opposite the helicopter's motion. Find the initial velocity of the package relative to the ground.
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Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.
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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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(7c4p133) A helicopter is flying in a straight line over a level field at a constant speed of 6.0 m/...
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