An ion is released from rest and moves due to the force from an electric field from a position in the field having a potential of 14 V to a position having a potential of 8 V. The ion:
a. can have either a positive or a negative charge.
b. must be neutral.
c. must have a positive charge.
d. must have a negative charge.
C
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In stellar astronomy, _____ states that the weight on each layer of a star is balanced by the pressure in that layer
A) the law of conservation of mass B) the law of conservation of energy C) the law of hydrostatic equilibrium D) the law of energy transport
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
If Burl carried Paul piggy-back while standing in the middle of a scaffold, the tensions in the two supporting ropes would
A) cancel to zero. B) be equal. C) be unequal. D) more easily support Burl and Paul.
The close-packed planes in a FCC metal are the ______________ family of planes.
Fill in the blank(s) with the appropriate word(s).