A mover slides a refrigerator 5 meters across a floor. If a force of 200 N was used, how much work was done?
1,000 J
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A galaxy is at a distance of one billion light years. Which of the following is true?
A) We see the galaxy the way it will be in one billion years. B) We see the galaxy the way it was one billion years ago. C) We see the galaxy the way it was when the universe was one billion years old. D) We see what our galaxy will be like in one billion years. E) We have no knowledge of anything at that distance.
An aircraft approaches a runway that runs directly east as a strong wind blows out of the south. The direction that the aircraft should aim in order to land is east of north
Indicate whether the statement is true or false
Equilibrium: In the figure, what does the spring scale read? The pulleys are ideal and the strings and scale are also massless.
A. exactly 2.0 N. B. exactly 1.0 N C. 0.50 N D. 0.00 N E. more than 19.6 N
White light is sent through a prism, and the various colors are separated in typical fashion. Which of the following colors would have the highest index of refraction in this prism?
a. green c. blue b. red d. yellow