This topic contains a solution. Click here to go to the answer

Author Question: That quasars were at cosmological distances yet appeared like ordinary faint stars meant A) they ... (Read 168 times)

appyboo

  • Hero Member
  • *****
  • Posts: 527
That quasars were at cosmological distances yet appeared like ordinary faint stars meant
 
  A) they were the brightest stars ever observed.
  B) they must be very large.
  C) they must contain many O and B type stars.
  D) they must be producing such large quantities of energy than even fusion could not explain their output.
  E) they must be very small, but bright due to gravitational lensing.

Question 2

Suppose you heat up an oven and boil a pot of water. Which of the following explains why you would be burned by sticking your hand briefly in the pot but not by sticking your hand briefly in the oven?
 
  A) The oven has a higher temperature than the water.
  B) The water has a higher temperature than the oven.
  C) The oven has a higher heat content than the water.
  D) The molecules in the water are moving faster than the molecules in the oven.
  E) The water has a higher heat content than the oven because of density.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Rilsmarie951

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

D

Answer to Question 2

E




appyboo

  • Member
  • Posts: 527
Reply 2 on: Jul 27, 2018
Gracias!


dawsa925

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Excellent

 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

For a complete list of videos, visit our video library