Physics, 06.12.2019 03:31 jstamey757
Aheat pump absorbs heat from the atmosphere at a rate of 30 kw. if work is being done to run this heat pump at a rate of 7.7 kw, what is the coefficient of performance (cop) of the heat pump? a) 2.9b) 22c) 0.26d) 3.9e) 4.9
Answers: 2
Physics, 21.06.2019 19:30
A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?
Answers: 1
Physics, 21.06.2019 22:50
Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]
Answers: 2
Physics, 22.06.2019 14:40
14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2รทv1is
Answers: 1
Physics, 22.06.2019 19:30
Ashot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0 โabove the horizontal. the shot hits the ground 2.08 s later. you can ignore air resistance. how far did she throw the shot?
Answers: 2
Aheat pump absorbs heat from the atmosphere at a rate of 30 kw. if work is being done to run this he...
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