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Author Question: An electron has a ________ electric charge. Fill in the blank(s) with correct ... (Read 49 times)

luminitza

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on: Jul 27, 2018
An electron has a ________ electric charge.
 
  Fill in the blank(s) with correct word

Question 2

Why do O stars exhibit weak hydrogen absorption lines?
 
  A) At these high temperatures, nearly all the hydrogen is ionized, and is therefore unable to interact with light.
  B) O stars are too cool to excite hydrogen atoms to the first energy level from which they can then absorb visible wavelengths of light.
  C) O stars contain very little hydrogen.


fdliggud

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

negative

Answer to Question 2

A


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