Physics, 16.01.2020 00:31 razerocfu4523
You push a heavy crate. at first it doesn't move. you push harder, and it finally starts to move, but you still have to exert some force to keep it moving at a constant velocity. explain.
Answers: 1
Physics, 22.06.2019 16:50
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35Β°c by rejecting waste heat to cooling water that enters the condenser at 18Β°c at a rate of 0.25 kg/s and leaves at 26Β°c. the refrigerant enters the condenser at 1.2 mpa and 50Β°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
Physics, 22.06.2019 23:30
How is the ideal mechanical advantage of a wheel and axle calculated?
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Physics, 23.06.2019 01:10
The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?
Answers: 3
Physics, 23.06.2019 01:30
)consider two positively charged particles, one of charge q0 (particle 0) fixed at the origin, and another of charge q1 (particle 1) fixed on the y-axis at (0,d1,0). what is the net force fβ on particle 0 due to particle 1?
Answers: 2
You push a heavy crate. at first it doesn't move. you push harder, and it finally starts to move, bu...
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