When did Copernicus live?
A) about 500 years ago
B) about 1000 years ago
C) about 2000 years ago
D) about 100 years ago
E) about 5000 years ago
A
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Nuclear Fission and Fusion: If a nuclear fission reactor produces an average power of 1.0 GW over the course of a year, what mass of 235U is used up for a 365-day year if 200 MeV are released per fission reaction? (1 eV = 1.60 × 10-19 J, mneutron ? mproton = 1.67 × 10-27 kg)
A. 0.35 kg B. 1.75 kg C. 390 kg D. 1.1 × 108 kg E. 3.3 × 108 kg
In terms of Jupiter masses, what is the range of brown dwarfs? What are objects above and below this range called?
What will be an ideal response?
Liquid crystal displays make use of __________
Fill in the blank(s) with correct word
In the Northern Hemisphere, the Coriolis force causes all free-moving objects in the air to curve
A) to the left of their intended path. B) to the right of their intended path. C) counterclockwise to their intended path. D) clockwise to their intended path.