When current is flowing in a superconductor, which statement is not true?
a. The resistance is zero.
b. No power is given off in the form of heat.
c. A battery is needed to keep the current going.
d. Electrical charges are moving.
C
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A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole, 2.22 mm in diameter, has formed in the base of the tank
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