Physics, 15.08.2021 14:30 CoolRahim9090
(1) A man of mass 50 kg stands in a lift. Calculate the reaction of the floor of the lift on the man when the lift moves with an acceleration of 2 ms2 (a) upwards: (B) downwards. [Take g = 10.0 m 5-2 ]
Answers: 2
Physics, 22.06.2019 21:30
Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.
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Physics, 23.06.2019 03:00
Are good conductors of heat also good conductors of electricity? explain your answer.
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Physics, 23.06.2019 07:00
I) a gas contained within a piston-cylinder assembly undergoes two processes, a and b, between the same end states, 1 and 2, where p1 = 10 bar, v1 = 0.1 m3 , u1 = 400 kj and p2 = 1 bar, v2 = 1.0 m3 , u2 = 200 kj: ' process a: process from 1 to 2 during which the pressure-volume relation is pv = constant. ' process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to state 2. kinetic and potential energy effects can be ignored. for each of the processes a and b, a) sketch the process on a p-v diagram. b) evaluate the work, in kj. c) evaluate the heat transfer, in kj.(ans : qb,12 = -65.0 kj)
Answers: 3
(1) A man of mass 50 kg stands in a lift. Calculate the reaction of the floor of the lift on the man...
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