Physics, 18.01.2020 05:31 jbainbynn1296
Which of the following is a false statement? which of the following is a false statement?
1. the total entropy change in one cycle of a carnot engine is zero.
2. entropy can be measured in units of j/k.
3. the entropy of an isolated system must be conserved (it remains constant).
4. entropy is a quantitative measure of disorder.
Answers: 1
Physics, 21.06.2019 23:30
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
Physics, 22.06.2019 03:30
Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n
Answers: 1
Physics, 22.06.2019 05:40
The difference between a red shift and a blue shift has to do with wavelength frequency. t or f
Answers: 1
Which of the following is a false statement? which of the following is a false statement?
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