This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What percentage of a star's total lifetime is spent on the main sequence? A) 100 B) 50 C) 90 D) ... (Read 106 times)

mia

  • Hero Member
  • *****
  • Posts: 564
on: Jul 27, 2018
What percentage of a star's total lifetime is spent on the main sequence?
 
  A) 100 B) 50 C) 90 D) 20 E) 10

Question 2

The observable universe is the same size today as it was a few billion years ago.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frejo

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

FALSE


mia

  • Member
  • Posts: 564
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

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

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Balmer Lines in the Spectrum of a Star Balmer Lines in the Spectrum of a Star
Spectral Line Motion in Binary Star Systems Spectral Line Motion in Binary Star Systems
Global OBD II can be accessed from the main menu on all aftermarket and some original equipment ... Global OBD II can be accessed from the main menu on all aftermarket and some original equipment ...
Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins
Anglin's estimates of the total vocabulary of children in Grades 1, 3, and 5 Anglin's estimates of the total vocabulary of children in Grades 1, 3, and 5
Time spent on, paid work and housework, by living arrangements of Canadian Time spent on, paid work and housework, by living arrangements of Canadian
Video: Neuron Type Animation

For a complete list of videos, visit our video library