lect 18 - Question 8-1 In what way is the general theory of...

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In what way is the general theory of relativity more general (deals with more situations) than the special theory? A It includes accelerated observers but no gravitation. B It includes accelerated observers and gravitation. C It includes only constant, unaccelerated observers. D It includes only motion at the speed of light. Question 8-1
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The Principle of Equivalence explains which of the following concepts? (think carefully, use Newton’s law of gravitation) A Weight and mass are the same thing. B Equal masses have equal forces of gravity causing everything to fall at equal speeds. C The force of gravity is equal on all masses. D The force of gravity is greater on bodies with a greater mass causing all masses to fall to Earth with the same acceleration. Question 8-2
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Suppose you were watching an unfortunate fellow astronaut falling into a black hole. Compared to your ship's master clock, the watch on his wrist, as you see it (and while you still can see it), would be running A backwards B faster C slower D at the same rate Question 8-3
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Which of the following do astronomers use to discover possible black holes? A Dark regions in the sky. B Red-shifted optical spectra. C Spheres of orbiting photons. D Strong X-ray emissions. E The slowing of clocks. Question 8-4
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The imaginary surface around a black hole inside which nothing can escape is called the A mass limit. B event horizon. C invisible shell. D singularity. Question 8-5
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The center of our galaxy lies in the direction of the constellation of A Ursa Minor B Ursa Major C Orion D Cassiopeia E Sagittarius Question 8-6
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Population I stars have more heavy elements because A old stars destroy heavy elements as they age. B young stars burn their nuclear fuels faster. C the heavy elements were made in previous generations of stars. D heavy elements haven't had time to settle to the core of these younger stars. Question 8-7
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Population II stars: I ) are primarily found in the disk of the galaxy; II) contain more heavy metals than Population I stars; III) are primarily old stars; IV) are primarily found in globular clusters and the core. A III and IV B I and II C II D IV E I, II and III Question 8-8
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the stars of the disk component of our galaxy? A
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This note was uploaded on 02/06/2011 for the course ASTR 113 taught by Professor Geller during the Spring '08 term at George Mason.

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lect 18 - Question 8-1 In what way is the general theory of...

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