In contrast to Ursa Major, the Big Dipper is not a(n) ___ but is instead a(n) ______
a. star; constellation.
b. asterism; constellation.
c. a constellation; asterism.
d. Wrong! Both are asterisms.
e. Wrong! Both are official constellations.
c
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A light bulb, sold as long-lasting, is rated 95 W at 145 V. The "increased" lifetime comes from using it at 110 V. Assuming negligible change in resistance at the different voltage, what is its power consumption at 110 V?
a. 55 W b. 170 W c. 190 W d. 47 W e. 110 W
Each atom of the same element, zinc for example, has the same number of
A) electrons in the nucleus B) electrons in the valence bond level C) neutrons in the outer nuclear shell D) protons in the nucleus
The equivalence principle says that a person in an elevator that is in free fall feels the same acceleration as:
A) a person in an elevator going up with an acceleration of g. B) a person in space, far from any gravitational source accelerating at g. C) a person in an elevator going down with an acceleration of g. D) a person in space, far away from any gravitational source with no acceleration. E) a person in orbit of Earth accelerating at g upward.
The flux through a coil changes from 4 × 10-5 Wb to 5 × 10-5 Wb in 0.1 s. What emf is induced in this coil?
A) 5 × 10-4 V B) 1 × 10-4 V C) 4 × 10-4 V D) 3 × 10-4 V E) 7 × 10-4 V