Physics, 15.10.2020 01:01 whiteshawn0250
15. A kitten is sitting stationary on a skateboard. The kitten has a mass of 1.25 kg, and the skateboard
has a mass of 3.5 kg. If the kitten remained on the skateboard while being pushed, what force would be
required to achieve an acceleration of 2.0 m/s2? Ignore friction.
Answers: 2
Physics, 22.06.2019 11:20
How to tell if a molecule is polar or nonpolar with electronegativity
Answers: 2
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, 22.06.2019 15:30
Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.
Answers: 2
Physics, 22.06.2019 17:20
Properties seen when one one substance changes to another are known as properties
Answers: 1
15. A kitten is sitting stationary on a skateboard. The kitten has a mass of 1.25 kg, and the skateb...
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