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Author Question: When the chromosphere can be seen during a solar eclipse, it appears: A) invisible. B) violet. ... (Read 55 times)

SO00

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on: Jul 27, 2018
When the chromosphere can be seen during a solar eclipse, it appears:
 
  A) invisible.
  B) violet.
  C) blue.
  D) yellow.
  E) red.

Question 2

When we see X-rays from an accretion disk in a binary system, we can't immediately tell whether the accretion disk surrounds a neutron star or a black hole. Suppose we then observe each of the following phenomena in this system.
 
  Which one would force us to immediately rule out the possibility of a black hole? A) bright X-ray emission that varies on a time scale of a few hours
  B) spectral lines from the companion star that alternately shift to shorter and longer wavelengths
  C) sudden, intense X-ray bursts
  D) visible and ultraviolet light from the companion star


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chereeb

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Reply #1 on: Jul 27, 2018
Answer to Question 1

E

Answer to Question 2

C


SO00

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Reply 2 on: Jul 27, 2018
Wow, this really help

bassamabas

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Reply 3 on: Yesterday
Excellent

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