The symbol indicating the number of neutrons in a nucleus is __________
Fill in the blank(s) with correct word
N
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A flat circular wire loop lies in a horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the earth's magnetic field points to the north and dips below the horizontal
Which side of the coil tends to lift off of the table due to the magnetic torque on the loop? A) the north side B) the east side C) the south side D) the west side E) The entire loop lifts straight up.
Stars in a constellation ________.
A. are close to one another in space B. neither rise nor set C. are in the same direction in the sky D. all formed at about the same time E. None of these choices is correct.
It is very likely that the general theory of relativity will need to be refined because it is currently incompatible with
A) electromagnetism B) quantum mechanics C) Newtonian gravity D) all of these
Three equal negative charges are placed at three of the four corners of a square. The direction of the electric field at the remaining corner of the square is
A. along the line connecting this corner with the opposite corner, and toward that corner. B. along the line connecting this corner with the opposite corner, but away from that corner. C. along a side of the square away from one of the charges. D. along a side of the square toward one of the charges. E. no direction, zero field.