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If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.
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Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
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If you were to take the universe's temperature, what would the reading be?
a. 3 k
b....
a. 3 k
b....
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