Physics, 12.12.2019 05:31 mariaaalopezz
Six new refrigerator prototypes are tested in the laboratory. for each refrigerator, the electrical power p needed for it to operate and the maximum heat energy that can be removed per second qc, max/δt from its interior are given.
part a
rank these refrigerators on the basis of their performance coefficient.
rank from largest to smallest. to rank items as equivalent, overlap them.
part b
thsee six refrigerators are placed in six identical sealed rooms. rank the refrigerators on the basis of the rate at which they raise the temperature of the room.
rank from largest to smallest. to rank items as equivalent, overlap them.
1) p= 750 w, qc, max/deltat= 1500 j/s
2) p= 400 w, qc, max/deltat= 1200 j/s
3) p= 500 w, qc, max/deltat= 2000 j/s
4) p= 250 w, qc, max/deltat= 1000 j/s
5) p= 500 w, qc, max/deltat= 1500 j/s
6) p= 1000 w, qc, max/deltat= 3000 j/s
Answers: 2
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Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.
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Physics, 22.06.2019 19:30
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Physics, 22.06.2019 21:30
In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane
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Six new refrigerator prototypes are tested in the laboratory. for each refrigerator, the electrical...
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