Author Question: An electron has a ________ electric charge. Fill in the blank(s) with correct ... (Read 82 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
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

  • Sr. Member
  • ****
  • Posts: 366
Answer to Question 1

negative

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

For a complete list of videos, visit our video library