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Physics, 22.06.2019 13:50
9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.
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Physics, 22.06.2019 19:00
The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.
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Physics, 22.06.2019 19:30
A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
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Physics, 22.06.2019 20:00
An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.
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Chemistry, 10.07.2019 05:30
History, 10.07.2019 05:30
History, 10.07.2019 05:30
History, 10.07.2019 05:30
Mathematics, 10.07.2019 05:30
History, 10.07.2019 05:30
History, 10.07.2019 05:30
Biology, 10.07.2019 05:30
Biology, 10.07.2019 05:30