An object moving on a horizontal, frictionless surface makes a glancing collision with another object initially at rest on the surface. in this case which of the following is true about momentum and kinetic energy? 4a) momentum is always conserved, and kinetic energy may be conserved. (b) kinetic energy is always conserved, and momentum may be conserved. (c) momentum is always conserved, and kinetic energy is never conserved. (d) both momentum and kinetic energy are always conserved. (e) neither momentum nor kinetic energy is conserved.
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Physics, 22.06.2019 06:30
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
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Physics, 22.06.2019 06:30
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Physics, 22.06.2019 16:00
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Physics, 22.06.2019 16:00
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