The first scientist to introduce the concept of inertia was
A) Aristotle.
B) Galileo.
C) Newton.
D) Copernicus.
Answer: B
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At room temperature (~295 K with kT ~ 0.025 eV), what fraction of the free electrons in a semiconductor with an energy gap of 1.5 eV can be expected to be in the conduction band?
A) 10-9 B) 10-13 C) 10-30 D) 0.03 E) 10-15
A 0.200-kg mass attached to the end of a spring causes it to stretch 5.0 cm. If another 0.200-kg mass is added to the spring, the potential energy of the spring will be
A) the same. B) one-half as much. C) twice as much. D) 3 times as much. E) 4 times as much.
How much heat is required to increase the temperature of 1.70 moles of an ideal monatomic gas by 23.0 K at constant pressure?
A) 812 J B) 346 J C) 751 J D) 391 J E) 290 J
Metamorphism occurs for which class of rocks?
a. Metamorphic only b. Sedimentary only c. Igneous only d. All of the above