A Carnot engine operating between a reservoir of liquid mercury at its melting point (233 K) and a colder reservoir extracts 10.0 J of heat from the mercury and does 8.0 J of work during each cycle. What is the temperature of the colder reservoir?
A) 47 K
B) 186 K
C) 163 K
D) 207 K
A
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If you could convert the Earth (mass 6×1027g) into pure energy, how much energy wouldbe produced (in ergs) compared to what the Sun produces over its whole life (1.2×1051ergs)? The speed of lightc= 3×1010cm/s.
a) more than 10 times more b) three times less c) roughly the same amount d) three times more e) more than 10 times less
Determine the equivalent capacitance of the combination shown when C = 15 mF.
A. 20 mF B. 16 mF C. 12 mF D. 24 mF E. 75 mF
A real object is place to the left of a converging lens and an image forms. Then, to the right of the converging lens a diverging lens is placed. A real, inverted final image forms to the right of the diverging lens. Which of the following could give this result?
a. An upright virtual image caused by the first lens forms between the two lenses. b. An inverted real image caused by the first lens forms between the two lenses. c. A real, upright image was formed by the first lens to the right of where the diverging lens is to be placed. d. A real, inverted image was formed by the first lens to the right of where the diverging lens is to be placed.
Titan has oceans made chiefly of liquid ________
Fill in the blank(s) with correct word