The area under the curve on a Force versus time (F vs. t) graph represents
A)
impulse.
B)
momentum.
C)
work.
D)
kinetic energy.
E)
potential energy.
A
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If a charge of 12 ?C is located 5.0 cm from a charge of 6.5 ?C, the potential energy of this arrangement is
A) 1.4 × 10-5 J. B) 14 J. C) 0. D) 2.8 × 10-4 J. E) 281 J.
Of all the terrestrial planets, Mercury's orbit is most eccentric and tilted most above the ecliptic
Indicate whether the statement is true or false
If a 10°C piece of iron is heated until it has twice as much internal energy, its temperature will be
A) 20°C. B) 273°C. C) 293°C. D) 566°C. E) none of the above
Large molecular clouds will form into protostars because of ____
a. the thermal motions of the atoms in the gas cloud b. gravitational contraction c. radiation pressure from nearby stars d. the temperature reaching a critical point e. condensation of dust and gas