Example Questiosn for Chapter 13

Example Questiosn for Chapter 13 - If its gravity decreased...

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Willie Reaves PHYS 116 Dr. Richard Williamon 8 Nov 2011 Ch. 13 Questions 1. Which of the following effects allows white dwarfs to be supported against the crush of gravity? a. Electron degeneracy pressure (CORRECT ANSWER) b. Angular momentum c. Thermal pressure d. What? White dwarfs are quickly consumed by gravity 2. Imagine that you are in your kitchen and you head to the sugar jar. Instead of pulling out sugar, however, you struggle to scoop out a teaspoon of some matter that apparently weighs several tons here on Earth. What have you just pulled out of your sugar jar? a. Some illegal drug b. A portion of a black hole c. A jovian meteorite d. Part of a white dwarf (CORRECT ANSWER) 3. The radius of a black hole’s event horizon is called what? The Schwarzschild Radius 4. In which case could diving into a black hole conceivably be non-lethal? a.
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Unformatted text preview: If its gravity decreased enough for it to become a white hole b. If the blueshifting caused by your jump were to stop due to the changing effect of light within a black hole c. If the black hole were very large and had weaker tidal forces (CORRECT ANSWER) d. Seriously? Of course, all black holes would be deathlyotherwise, its not a black hole! 5. Which of the following logical statements is true? a. All pulsars are neutron stars, but not all neutron stars are pulsars. (CORRECT ANSWER) b. Some black holes are aged brown dwarfs, but no aged brown dwarfs are black holes. c. All stellar disturbances are caused by black holes, but only some black holes directly cause stellar disturbances. d. None of the above statements are true. e. Why are you giving me these? Im not taking the LSAT!...
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