Every location on the celestial sphere is part of some
a. degree.
b. tropic.
c. constellation.
d. sign.
Ans: c. constellation.
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The average temperature of the typical dark dust cloud is about:
A) 0 K. B) 2.73 K. C) 100 K. D) 3,000 K. E) 6,000 K.
In a circuit involving resistance and capacitance, which of the following choices would result in the longest time constant?
a. R = 100 ?, C = 30 ?F b. R = 300 ?, C = 150 ?F c. R = 75 ?, C = 75 ?F d. R = 200 ?, C = 200 ?F
A barge is 10 m wide and 60 m long and has vertical sides. The bottom of the boat is 1.2 m below the water surface. What is the weight of the barge and its cargo, if it is floating in fresh water of density 1000 kg/m3?
A) 3.5 MN B) 6.4 MN C) 6.8 MN D) 7.1 MN E) 9.5 MN
Most of the injuries caused by the Chelyabinsk event in 2013 were caused by
A) smoke inhalation B) UV radiation from the fireball C) glass shattered by the shock wave D) the sonic boom as the object passed through the Earth's atmosphere