Compared with sea-level cooking, in cooking eggs by boiling in mountain regions you should boil the eggs
A) with a hotter flame.
B) for a shorter time.
C) for a longer time.
D) all of the above
E) none of the above
Answer: C
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An interstellar gas cloud has the mass to form hundreds of stars. What generally happens to it?
What will be an ideal response?
After filling the 5s level, the next higher level to be filled is
A) 4s. B) 4d. C) 5p. D) 5d. E) 6s.
Coulomb's Law: As shown in the figure, three charges are at corners of a rectangle. The charge in the bottom right corner is Q = - 90 nC, and all the other quantities are accurate to two significant figures. What is the magnitude of the net electrical force on Q due to the other two charges? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 3.8 × 10-2 N B. 2.8 × 10-2 N C. 5.3 × 10-2 N D. 7.1 × 10-2 N
What is the size of an object located at a distance of 1,000 meters and that has angular size A = 4 degrees?
A. about 4,000 meters B. about 11 meters C. about 35 meters D. about 70 meters