An inventor claims to have invented four engines, each of which operates between constant-temperature reservoirs at 400 and 300 K. Data on each engine, per cycle of operation, are: engine A, Q H = 200 J, Q L = –175 J, and W = 40 J; engine B, Q H = 500 J, Q L = –200 J, and W = 400 J; engine C, Q H = 600 J, Q L = –200 J, and W = 400 J; engine D, Q H = 100 J, Q L = –90 J, and W = 10 J. Of the first and second laws of thermodynamics , which (if either) docs each engine violate?
An inventor claims to have invented four engines, each of which operates between constant-temperature reservoirs at 400 and 300 K. Data on each engine, per cycle of operation, are: engine A, Q H = 200 J, Q L = –175 J, and W = 40 J; engine B, Q H = 500 J, Q L = –200 J, and W = 400 J; engine C, Q H = 600 J, Q L = –200 J, and W = 400 J; engine D, Q H = 100 J, Q L = –90 J, and W = 10 J. Of the first and second laws of thermodynamics , which (if either) docs each engine violate?
An inventor claims to have invented four engines, each of which operates between constant-temperature reservoirs at 400 and 300 K. Data on each engine, per cycle of operation, are: engine A, QH = 200 J, QL= –175 J, and W = 40 J; engine B, QH = 500 J, QL = –200 J, and W = 400 J; engine C, QH = 600 J, QL = –200 J, and W = 400 J; engine D, QH = 100 J, QL = –90 J, and W = 10 J. Of the first and second laws of thermodynamics, which (if either) docs each engine violate?
Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.
The cylindrical beam of a 12.7-mW laser is 0.920 cm in diameter. What is the rms value of the electric field?
V/m
Consider a rubber rod that has been rubbed with fur to give the rod a net negative charge, and a glass rod that has been rubbed with silk to give it a net positive charge. After being charged by contact by the fur and silk...?
a. Both rods have less mass
b. the rubber rod has more mass and the glass rod has less mass
c. both rods have more mass
d. the masses of both rods are unchanged
e. the rubber rod has less mass and the glass rod has mroe mass
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The Second Law of Thermodynamics: Heat Flow, Entropy, and Microstates; Author: Professor Dave Explains;https://www.youtube.com/watch?v=MrwW4w2nAMc;License: Standard YouTube License, CC-BY