Physics, 31.01.2020 04:52 Andinojose
You and a friend stand still on an escalator. a stationary observer sees you moving at a speed of 0.35 m/s. from your frame of reference, what is the speed of your friend?
Answers: 1
Physics, 21.06.2019 15:30, jungcoochie101
What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons
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, 22.06.2019 21:00, tobyfoerst
If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?
Answers: 2
You and a friend stand still on an escalator. a stationary observer sees you moving at a speed of 0....
Chemistry, 27.10.2021 21:20