The fact that Voyager 10 continues to speed out of the solar system, even though its rockets have no fuel, is an example of
A) Newton's first law of motion.
B) Newton's second law of motion.
C) Newton's third law of motion.
D) the universal law of gravitation.
E) none of the above
A
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Kinetic Energy: What is the total energy of an electron moving with a speed of 0.950c? (c = 3.0 × 108 m/s, mel = 9.11 × 10-31 kg)
A. 2.6 × 10-13 J B. 8.2 × 10-14 J C. 1.1 × 10-13 J D. 1.2 × 10-14 J
Electrons in a particle beam each have a kinetic energy of 4.0 × 10^?17 J. What is the magnitude of the electric field that will stop these electrons in a distance of 0.3 m? (e = 1.6 × 10^?19 C)
a. 1.9E+3 N/C b. 7.5E+3 N/C c. 8.3E+2 N/C d. 1.3E+3 N/C e. 6.3E+3 N/C
If a volume of air is warmed, it expands. If a volume of air expands, it
A) warms. B) cools. C) neither warms nor cools.
According to Einstein's equivalence principle, which of the following cannot be distinguished from a system accelerating with uniform acceleration in the presence of no gravity by any measurement within the system?
A) a system moving with constant velocity in the presence of no gravitational force B) a system that only contains massless objects C) a system that is not accelerating, but is subject to a uniform gravitational acceleration D) a system that is moving at the speed of light E) a system in free fall