Physics, 09.03.2020 19:01 joThompson
The first law of thermodynamics states that ΔE= Q− W . Is this also a statement of the principle of conservation of energy? Yes, the heat added and the change in internal energy of the gas equal the work done by the piston. No, the change in internal energy is the energy lost in the system. Yes, the heat that flows into the system is used to change the internal energy of the gas and becomes work done by the piston. No, the heat that is added to the system is only used to do work.
Answers: 3
Physics, 21.06.2019 15:40
Arock is dropped from a cliff and reaches the ground in 2.70s. at the same time another rock is thrown horizontally from the same height with initial x velocity of 0.95 m/s. what distance will in x will the second rock cover?
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The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
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The first law of thermodynamics states that ΔE= Q− W . Is this also a statement of the principle of...
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