A one-kilogram gold ingot is carried from the bottom of the Eiffel tower to the top, 300 m above ground level. By what amount does its mass change?
A) Its mass does not change.
B) Its mass increases by 3.27 × 10-14 kg.
C) Its mass decreases by 3.27 × 10-14 kg.
D) Its mass increases by 1.64 × 10-14 kg.
E) Its mass decreases by 1.64 × 10-14 kg.
B
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According to Newton's laws, if an object is moving in a straight line with a constant speed:
A) it will continue to do so until it runs out of energy. B) it will continue to do so unless compelled by an outside force to do otherwise. C) it will move more and more slowly, in the same direction, until it comes to a complete stop. D) it will eventually come to a stop and reverse directions. E) it will gradually move faster and faster until it reaches the speed of light.
Jupiter does not have a large metal core like Earth. How can it have a magnetic field?
a. The magnetic field is left over from when Jupiter accreted. b. Its magnetic field comes from the Sun. c. It has metallic hydrogen inside, which circulates and makes a magnetic field. d. It has a large metal core.
A valid unit for momentum is which of the following?
a. kgm/s2 c. kgm/s b. kg/m2 d. Nm
A physicist claims that she has found a new particle with a mass 200 000 times the mass of the proton (1.67 × 10^-27 kg) and a charge of 3.20 × 10^-19 C. If she is correct, such a particle traveling in a circle in a uniform 5.00 T magnetic field at a velocity of 2 500 m/s will have a radius of
a. 0.261 m. b. 0.522 m. c. 1.04 m. d. 3.27 m. e. 3.13 × 10^26 m.