If a current of negative charge flows in a circle in the direction of one's curled fingers of the right hand, the resulting magnetic field would be in the direction
A. opposite to the thumb of the right hand.
B. of the right index finger.
C. of due north.
D. of the thumb of the right hand.
Answer: A
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Significant Figures: What is 
expressed to the correct number of significant figures?
Fill in the blank(s) with the appropriate word(s).
Ehrenfeld (119) argues that nonresources should be conserved. By this he means that conservation cannot and should not rely on economic or ecological justifications
He thinks that each species on the Earth, evolved over millions of years, is natural art, and that a species lost is permanently gone. He asks: "What sort of change in the world view would favor the conservation of nonresources? Nothing less than a rejection of the heroic, Western ethic with its implicit denial of man's biological roots and evolved structure." Comment on Ehrenfeld's ideas.
Which two processes can generate energy to help a star or gas cloud maintain its internal thermal pressure?
A) nuclear fusion and gravitational contraction B) nuclear fusion and nuclear fission C) nuclear fusion and supernova D) nuclear fission and supernova
If you found absorption from _________ in the spectrum of a planet, you could conclude that it might contain some form of life.
a. oxygen b. methane c. water vapor d. oxygen, methane, or water vapor