A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 6.0 m/s. How much power does this force deliver to the object?
A) 5.0 W
B) 20 W
C) 160 W
D) 0 W
E) 120 W
E
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You have three dice and you roll them simultaneously. What is the chance that all three dice will end up with the same value?
1.1/6 2.3/6 3.1/36 4.1/216
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By about how much does the greenhouse effect change the temperature of Earth?
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