A thermodynamic engine having the maximum possible efficiency has an efficiency of 35.0% when operating between two heat reservoirs. If the temperature of the hot reservoir is 700 K, what is the temperature of the cold reservoir?
A) 200 K
B) 245 K
C) 350 K
D) 455 K
E) 600 K
D
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When did the heavy bombardment end?
A) about 4.5 billion years ago B) between about 4.3 and 4.5 billion years ago C) between about 3.8 and 4.0 billion years ago D) exactly 3.95 billion years ago
When a cannon is fired, it recoils as the cannonball is set in motion. The cannon and cannonball ideally acquire equal
A) but opposite amounts of momentum. B) amounts of kinetic energy. C) both of these D) neither of these
As the temperature of the air increases, what happens to the velocity of sound? (Assume that all other factors remain constant.)
A) It increases. B) It decreases. C) It does not change. D) It increases when atmospheric pressure is high and decreases when the pressure is low.
Because of their immense size, black holes moving through space consume huge quantities of interstellar matter along their paths
Indicate whether the statement is true or false