Physics, 20.12.2019 22:31 mathbrain58
Awindowpane is half a centimeter thick and has an area of 1.0 m2. the temperature difference between the inside and outside surfaces of the pane is 15° c.
what is the rate of heat flow through this window? (thermal conductivity for glass is 0.84 j/s⋅m⋅°c.)
a. 50 000 j/sb. 2 500 j/sc. 1 300 j/sd. 630 j/s
Answers: 3
Physics, 22.06.2019 06:30, jordanbyrd33
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)
Answers: 1
Awindowpane is half a centimeter thick and has an area of 1.0 m2. the temperature difference between...
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