A quantity of water has more entropy when it is
A) frozen ice.
B) boiling.
C) at room temperature.
Answer: B
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The central galaxy in a double-lobed radio source is usually
a. an irregular galaxy. b. a spiral galaxy. c. a dwarf elliptical galaxy. d. a giant elliptical galaxy. e. a quasar.
If a fossil were to be discovered which was 3.7 billion years old this would tell us that life on Earth must have arisen
A) exactly 3.7 billion years ago B) at least 3.7 billion years ago C) less than 3.7 billion years ago D) much later than 3.7 billion years ago
An imaginary line from one geographic pole to the other along the surface of Earth perpendicular to the equator, and that passes through Greenwich, England, is called
a. a longitude. b. a meridian. c. the International Date Line. d. a parallel. e. the prime meridian.
An ideal gas undergoes an adiabatic process while doing 25 J of work. What is the change in the internal (thermal) energy of the gas?
A) 50 J B) -25 J C) 0 J D) 25 J E) -50 J