If two electrons are at rest a short distance apart, they will feel
A) an attractive electric force, but no magnetic force.
B) a magnetic force but no electric force.
C) a repulsive electric force, but no magnetic force.
D) no electromagnetic forces.
E) both electric and magnetic forces.
C
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The energy of a ball rolling up an inclined plane
a. is entirely kinetic. b. is entirely potential. c. is both kinetic and potential. d. none of the above
A car of mass 1000 kg moves with a speed of 50 m/s on a circular track of radius 100 m. What is the magnitude of its angular momentum (in kg/m2/s) relative to the center of the race track?
a. 5.0 × 10^2 b. 5.0 × 10^6 c. 2.5 × 10^4 d. 2.5 × 10^6 e. 5.0 × 10^3
The Himalayan Mountains formed at which type of plate boundary?
A) transform—fault boundary B) Oceanic—continental convergent boundary C) divergent boundary D) continental—continental convergent boundary
Specific gravity is a number representing the ratio of a mineral's weight to the weight of an equal volume of water.
TRUE FALSE