As a rotating gas cloud contracts, it spins faster
Indicate whether the statement is true or false
TRUE
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Clusters of galaxy clusters are known as _____
A) megaclusters B) hyperclusters C) monoclusters D) superclusters
You wish to obtain a magnification of -2 from a convex lens of focal length f. The only possible solution is to
A) place a virtual object at a distance 3f/2 from the lens. B) place a real object at a distance 3f/2 from the lens. C) place a virtual object at a distance 2f/3 from the lens. D) place a real object at a distance 2f/3 from the lens. E) place a virtual object at a distance 5f/3 from the lens.
Which statement is true of Venus' surface?
A) There are no shield volcanoes. B) Atmospheric pressure is very low. C) It has remained unchanged for billions of years. D) There is an extensive hydrosphere. E) There are two continent sized uplands.
Equal-wavelength waves of amplitude 0.27 m and 0.13 m interfere with one another. What is the resulting minimum amplitude that can result?
a. 0.13 m b. 0.14 m c. 0 m d. ?0.40 m e. 0.20 m