Three forces, 5.0 N, 15.0 N, and 20.0 N, are acting on a 9.81 kg object. Which of the following forces could also be acting on the object if it is moving with constant velocity?
a. 1.0 N
c. 39.0 N
b. 19.0 N
d. any of the above
D
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If the presently accepted value of ?o = 0.3 (excluding dark energy) is indeed correct, then the universe will:
A) expand forever. B) expand to the critical size for the Steady State model, then become static. C) stop expanding in about forty billion years, to collapse into the next cosmic cycle. D) Two of the answers are correct. E) All of the above are correct.
Suppose you lived on the Moon. Which of the following would be true?
A) Your weight would be less than your weight on Earth, but your mass would be the same as it is on Earth. B) Both your weight and your mass would be less than they are on Earth. C) Your mass would be less than your mass on Earth, but your weight would be the same as it is on Earth. D) Both your weight and your mass would be the same as they are on Earth.
Jobs associated with recycling involve handling garbage, and so are dirtier than most comparably-paid jobs
What will be an ideal response?
Which of the following has the longest wavelength?
What will be an ideal response?