Engineering, 18.11.2019 20:31 Mathcat444
Aballoon initially contains 40 m3 of helium gas at atmospheric conditions of 100 kpa and 17 °c. the balloon is connected by a valve to a large reservoir that supplies helium gas at 125 kpa and 25 °c. now the valve is opened, and helium is allowed to enter the balloon until pressure equilibrium with the helium at the supply line is reached. the material of the balloon is such that its volume increases linearly with pressure. if no heat transfer takes place during this process, determine the final temperature in the balloon
Answers: 2
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
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Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
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Engineering, 04.07.2019 18:10
Burgers vector is generally parallel to the dislocation line. a)-true b)-false
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Aballoon initially contains 40 m3 of helium gas at atmospheric conditions of 100 kpa and 17 °c. the...
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