If an object is placed exactly halfway between Earth and the Moon, it would fall toward the
A) Earth.
B) Moon.
C) neither of these
Answer: A
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The traditional theory states that the galaxy formed
a. as a large spherical cloud of gas that was rotating very slowly. b. from a large cloud of material that broke off a larger galaxy. c. from material that had been ejected in the violent explosion of a dying galaxy. d. as a result of mergers between several smaller groups of gas, dust, and stars. e. as two massive galaxies collided.
The formula expresses the relationship between Kelvin temperature and the amount of radiated energy. If a star is three times the temperature of the Sun, how many times more intense is the energy radiated from an equal-sized area of its surface? (Answer with a number only
What will be an ideal response?
The tarp covering on a trailer or truck puffs upward for fast-moving vehicles, which illustrates
A) Pascal's principle. B) Archimedes' principle. C) the principle of continuity. D) Bernoulli's principle.
Consider a particle moving with constant speed such that its acceleration of constant magnitude is always perpendicular to its velocity
A) It is moving in a straight line. B) It is moving in a circle. C) It is moving in a parabola. D) It is moving in a hyperbola. E) None of the above is definitely true all of the time.