Physics, 09.04.2020 21:39 robert7248
A woman carries a 10kg box up a set of 5m high stairs and then down a 12m long hallway. How much work does she do on the box?
Answers: 1
Physics, 22.06.2019 10:00
Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?
Answers: 1
Physics, 22.06.2019 14:20
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 00:30
What types of radiation make up the electromagnetic spectrum?
Answers: 2
Physics, 23.06.2019 05:00
Why do some scientists and archeologists think that volta was not the first person to build a battery
Answers: 2
A woman carries a 10kg box up a set of 5m high stairs and then down a 12m long hallway. How much wor...
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