The power of American automobiles is usually rated in "horsepower." What other units could be used?
A) watts
B) joules
C) Calories
D) None of the above.
E) All of the above.
A
Physics & Space Science
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A farsighted person cannot see clearly closer than 2.0 m. What power contact lenses would correct this near point to 25 cm?
A. 2.0 D B. 0.5 D C. -0.5 D D. 3.5 D E. -3.5 D
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If the Sun were to disappear at this moment, we wouldn't know about it for
A) 7 seconds, reflex time. B) 8 seconds. C) 8 minutes. D) 8 hours.
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A ball is thrown straight up with an initial velocity of 10 m/s. After 3 seconds its velocity will be
A. 29.4 m/s. B. 19.4 m/s. C. -19.4 m/s. D. 0 m/s. E. -29.4 m/s.
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A mega-parsec (Mpc) is equivalent to
a. 3.26 light-years. b. 206,265 light years. c. 1,000,000 light years d. 3,260,000 light-years. e. the diameter of the Milky Way galaxy.
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