Physics: Concepts and Connections, 4 th ed., Art Hobson Chapter 11 – General Relativity.

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Physics: Concepts and Connections, 4 th ed., Art Hobson Chapter 11 – General Relativity

What is special about dark matter? A) Its gravitational force pushes (or repels) instead of pulling B) It can move faster than c. C) It is made of a material that has never been observed in our laboratories. D) It exerts no gravitational force

How do we know that dark energy exists? A) From gravitational lensing that bends light from distant luminous objects B) Light from distant galaxies is absorbed by something dark in the interstellar medium C) We have evidence that the universe is expanding at an accelerated rate

? A)B)C)D)E)

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