A bar magnet is falling toward the center of a loop of wire, with the north pole oriented downward. Viewed from the same side of the loop as the magnet, as the north pole approaches the loop, what is the direction of the induced current?
1.clockwise
2.zero
3.counterclockwise
4.along the length of the magnet
3
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The major division of chemistry that deals with what substances are present and in what quantities is called ______________chemistry
Fill in the blank(s) with correct word
What is one of the drawbacks to using fuel cells?
A) The fuel of the fuel cells is hard to handle. B) They are less efficient than combustion energy sources or batteries. C) They are very big and bulky, which makes them hard to use in small devices. D) There are no drawbacks. E) only A and B
Both nuclear reactors and atomic bombs use nuclear chain reactions
a. True b. False Indicate whether the statement is true or false
A mover slides a refrigerator 5 meters across a floor. If a force of 200 N was used, how much work was done?