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

Author Question: A star of spectral type O lives approximately how long on the main sequence? A) 1,000 years B) ... (Read 96 times)

fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
on: Jul 27, 2018
A star of spectral type O lives approximately how long on the main sequence?
 
  A) 1,000 years
  B) 10,000 years
  C) 10 million years
  D) 100 million years
  E) 1 billion years

Question 2

Venus is only a little bit (5) smaller than Earth, and its density is only slightly less than Earth's. Therefore, its mass is:
 
  A) the same as Earth's.
  B) just a little bit greater than Earth's.
  C) much greater than Earth's (more than 20 different).
  D) just a little bit less than Earth's.
  E) much less than Earth's (more than 20 different).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Joc

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

D


fasfsadfdsfa

  • Member
  • Posts: 554
Reply 2 on: Jul 27, 2018
:D TYSM

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

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?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

This Black-browed Albatross has been hooked on a long-line. This Black-browed Albatross has been hooked on a long-line.
Radial and Transverse Velocities of a Star Radial and Transverse Velocities of a Star
a) Type IV hypersensitivity reaction, contact dermatitis as the result of reaction to the nickel in ... a) Type IV hypersensitivity reaction, contact dermatitis as the result of reaction to the nickel in ...
Human activity has released carbon from sequestration in long-term reservoirs Human activity has released carbon from sequestration in long-term reservoirs
Approximately 40 percent of farmers in the United States are 55 years old or older Approximately 40 percent of farmers in the United States are 55 years old or older
Annotation of a DNA sequence containing part of the human beta globin gene Annotation of a DNA sequence containing part of the human beta globin gene
Video: Cavernous Sinus Larynx Middle Ear Orbit: Granulesm Animation

For a complete list of videos, visit our video library