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Author Question: A radio galaxy whose lobes are swept back as if forming a tail probably indicates A) evidence for ... (Read 45 times)

roselinechinyere27m

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on: Jul 27, 2018
A radio galaxy whose lobes are swept back as if forming a tail probably indicates
 
  A) evidence for intergalactic matter.
  B) there must be another galaxy nearby.
  C) the galaxy is about to evolve into a spiral.
  D) the galaxy is moving towards Earth.
  E) the galaxy is isolated, not part of a cluster.

Question 2

In the proton-proton cycle, two positrons are produced. What more familiar particles are they similar to, and how do they differ?
 
  What will be an ideal response?


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jointhecircus

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

A

Answer to Question 2

Positrons are anti-electrons, made of antimatter, and with a positive charge instead of the negative charge of normal electrons.


roselinechinyere27m

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Reply #2 on: Jul 27, 2018
Thanks


jointhecircus

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Reply #3 on: Jul 27, 2018
Welcome :)


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