A spring is stretched from 0.500 m to 0.800 m. Assume the un-stretched position is 0.00 m. If the spring constant of the spring is 10.0 N/m, what is the work done on the spring?
A. 1.95 J
B. 2.21 J
C. 2.45 J
D. 2.75 J
E. 3.01 J
A. 1.95 J
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Thin Lenses: Which of following statements about the image formed by a single converging lens are true? (There could be more than one correct choice.)
A. The image is always real. B. The image is always virtual. C. The image is always inverted. D. The image is always upright. E. None of these choices are correct.
Hubble's Law is important because ....
A. it showed the existence of dark matter in all galaxies. B. it showed the universe is expanding. C. it can be used to estimate the age of Irregular galaxies. D. it explained the rotational velocity curves of spiral galaxies.
Long canyons on the lunar surface are called ________.
A. rilles B. rifts C. maria D. rays
Compared to oceanic crust, continental crust is
A) thinner and denser B) thicker and less dense C) thicker and denser D) thinner and less dense