If you were to travel at a speed close to the speed of light, you would notice which of the following?
A. Your pulse rate has decreased
B. Your iPod plays music more slowly-everyone sounds like a baritone
C. Your mass has increased
D. You would notice all of the effects listed
E. You would notice none of the effects listed because you are in an inertial frame
Answer: E
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Radioactivity Basics: When a ?- particle is emitted from an unstable nucleus, the atomic mass number of the nucleus
A. increases by 1. B. decreases by 1. C. increases by 2. D. decreases by 2. E. does not change.
A 4.00 kg object is moving at 5.00 m/s SOUTH. It strikes a 3.00 kg object that is moving WEST at 2.00 m/s. The objects have a completely inelastic (stick together) collision. The kinetic energy lost in the collision is
A. 20.2 J. B. 18.4 J. C. 10.5 J. D. 8.33 J. E. 2.61 J.
The average density of each planet in the solar system is determined by taking its mass and dividing that by its
A) radius. B) diameter. C) surface area. D) radius squared. E) volume.
A planet with a density comparable to the Earth but several times more massive is described as a
A) mini-Neptune B) super-Earth C) mega-Earth D) super-Jovian