Aclosed rigid tank contains 1.5 kg of refrigerant, initially at p1 = 1.1 mpa and u1 = 277.25 kj/kg. the tank is fitted with a paddle wheel that transfers energy to the refrigerant at a constant rate of 0.1 kw. after 20 minutes of stirring, the refrigerant is at p2 = 0.85 mpa and u2 = 247.93 kj/kg. assume changes in kinetic and potential energy are negligible. a. determine work [kj] during the process (magnitude and direction) b. determine heat transfer [kj] during the process (magnitude and direction)
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Physics, 21.06.2019 21:20, sophie5064
Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.
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Physics, 22.06.2019 11:00, vanvalenpeyt
The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space. b. we'll know it immediately because it will be brighter than the full moon in the sky. c. we won't know about it until 600 years from now. d. none of the above.
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Physics, 22.06.2019 11:50, morenodonaldo762
The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e
Answers: 1
Aclosed rigid tank contains 1.5 kg of refrigerant, initially at p1 = 1.1 mpa and u1 = 277.25 kj/kg....
Mathematics, 22.06.2019 21:00
Advanced Placement (AP), 22.06.2019 21:00
Mathematics, 22.06.2019 21:00