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Author Question: Suppose you try to bring two protons close together. Because of the electromagnetic force, the two ... (Read 21 times)

nramada

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on: Jul 27, 2018
Suppose you try to bring two protons close together. Because of the electromagnetic force, the two protons will
 
  A) attract one another.
  B) remain stationary.
  C) repel one another.
  D) collide.
  E) join together to form a deuterium nucleus.

Question 2

Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, at least at first?
 
  A) A star with a mass of 3.7 MSun is too big to be a main sequence star.
  B) The two stars should be the same age, so we'd expect the subgiant to be more massive than the main-sequence star.
  C) It doesn't make sense to find a subgiant in a binary star system.
  D) The two stars in a binary system should both be at the same stage of life; that is, they should either both be main sequence stars or both be subgiants.


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bookworm410

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

C

Answer to Question 2

B


nramada

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

xiaomengxian

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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