Author Question: The Hubble time only describes a Universe that is ____. a. flat b. totally open c. totally closed ... (Read 119 times)

kellyjaisingh

  • Hero Member
  • *****
  • Posts: 540
The Hubble time only describes a Universe that is ____.
 
  a. flat
 b. totally open
 c. totally closed
 d. partially open
 e. partially closed

Question 2

What is released from the proton-proton chain and is immediately absorbed by the surrounding gas, thereby heating it?
 
  a. positrons
 b. gamma rays
 c. deuterium
 d. electron motion
  e. neutrinos



joechoochoy

  • Sr. Member
  • ****
  • Posts: 306
Answer to Question 1

b

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

For a complete list of videos, visit our video library