A 60 kilogram student running at 3.0 meters per second has a kinetic energy of ____.
A. 111 J
B. 151 J
C. 260 J
*D. 270 J
How much work is done in moving 5.0 coulombs of charge against a potential difference of 12 volts?
A. 30 J
*B. 60 J
C. 400 J
D. 400 J
E. 500 J
Compared to insulators, metals are better conductors of electricity because metals contain more free _____.
A. Protons
*B. Electrons
C. Neutrons
D. Neutrons
E. Positive ions
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