Physics, 27.02.2020 18:42 icantdomath4910
At a particular instant a proton is at the origin, moving with velocity < 4 104, 0, 0 > m/s. At this instant: (a) What is the electric field at location < -3 10-3, -3 10-3, 0 > m, due to the proton? (b) What is the magnetic field at the same location due to the proton? (c) How would the answers to (a) and (b) change if the particle had been an electron instead of a proton?
Answers: 2
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A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
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4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)
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Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero
Answers: 3
At a particular instant a proton is at the origin, moving with velocity < 4 104, 0, 0 > m/s. A...
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