Physics, 22.04.2021 22:40, kellymcdow9385
Two identical masses are free to slide (without friction) on a horizontal surface. The first mass is attached to two springs. One spring is attached to the wall and has a spring constant of n k, where n is an integer. The second spring is attached to the second mass and has spring constant of k. The two springs have the same relaxed length. The springs are set in motion, such the initial conditions result in the springs oscillating in such a way that the two springs always have equal length at any time. What is n, given the parameters of this problem
Answers: 1
Physics, 22.06.2019 14:20, jeny89
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)
Answers: 3
Physics, 23.06.2019 02:30, Juliianatafur22
Auniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm. what is its kinetic energy?
Answers: 2
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