Which of the following telescopes would benefit most from adaptive optics?
A) The Keck I Telescope on Mauna Kea.
B) The Hubble Space Telescope.
C) The Arecibo Radio Telescope in Puerto Rico.
D) The Chandra X-Ray Observatory.
A
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Work-Energy Theorem: A 4.0 kg object is moving with speed 2.0 m/s. A 1.0 kg object is moving with speed 4.0 m/s. Both objects encounter the same constant braking force, and are brought to rest. Which object travels the greater distance before stopping?
A. the 4.0 kg object B. the 1.0 kg object C. Both objects travel the same distance. D. It cannot be determined from the information given.
Compared to the density of water, our Earth averages about:
A) the same density, similar to Saturn. B) 3 times denser, much like our Moon. C) 4 times denser, similar to Mars. D) 5 times denser, like the Mercury and Venus. E) 10 times denser, due to our core of iron and nickel.
In what two ways is Titan's atmosphere like our own? Now name two differences
What will be an ideal response?
Willis thinks over the discussion of the second part of the first experiment described on pages 30-31 . He is interested in the equality of the force he exerts on the clone and the one the clone exerts on him
Later he tells his girlfriend Sheena "It may be right in that case, because both people had the same mass. It's wrong if the masses are different. If I met the Hulk and he pushed me, it would be with a greater force than I could use to push him back." Discuss this reasoning.