Which answer below is not a statement of the second law of thermodynamics?
a. Real processes proceed in a preferred direction.
b. Energy does not flow spontaneously by heat from a cold to a hot reservoir.
c. The entropy of the universe increases in all natural processes.
d. In theory, heat engines working in a cycle employ reversible processes.
e. You cannot construct a heat engine, operating in a cycle that does nothing but take heat from a reservoir and perform an equal amount of work.
d
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The coefficient of linear expansion of aluminum is 24.0 × 10-6 K-1 and the density of aluminum at 0°C is 2.70 × 103 kg/m3. What is the density of aluminum at 300°C?
A) 3.93 × 103 kg/m3 B) 2.73 × 103 kg/m3 C) 2.70 × 103 kg/m3 D) 2.67 × 103 kg/m3 E) 2.64 × 103 kg/m3
In the respiration reaction
A) carbon combines with such biological molecules as DNA. B) oxygen combines with the carbon in such biological molecules as glucose. C) CO2 combines with the carbon in such biological molecules as glucose. D) CO2 combines with H2O. E) oxygen combines with such biological molecules as DNA.
List the four laws of stellar structure
What will be an ideal response?
Jupiter's shape is ____________ because it is rotating rapidly and has a low density
Fill in the blank(s) with correct word