« previous next »

Author Question: About how many times more luminous than our Sun is a young solar mass protostar just beginning ... (Read 40 times)

bcretired

  • Hero Member
  • *****
  • Posts: 525
on: Jul 27, 2018
About how many times more luminous than our Sun is a young solar mass protostar just beginning convective contraction?
 
  A) 2-5
  B) 5-10
  C) 10-100
  D) 100-1000
  E) a million

Question 2

Which of the following statements about Mars is not true?
 
  A) We have landed spacecraft on its surface.
  B) It is considered part of our inner solar system.
  C) We could survive on Mars without spacesuits, as long as we brought oxygen in scuba tanks.
  D) It has some liquid water today, but used to have large amounts of flowing water.


nickk12214

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Young gorilla in tree Young gorilla in tree
The regions of the colon beginning with the cecum and ending at the anus. The regions of the colon beginning with the cecum and ending at the anus.
Origin of a Solar Flare Origin of a Solar Flare
Eleanor Roosevelt dispenses soup to the needy. As a wealthy young socialite, she exhibited little .. Eleanor Roosevelt dispenses soup to the needy. As a wealthy young socialite, she exhibited little ..
The DNA from one chromosome has a mass of ~20 billion Daltons The DNA from one chromosome has a mass of ~20 billion Daltons
Relationship of Sun Angle and Solar Radiation Relationship of Sun Angle and Solar Radiation
Video: Blood Test Basics

For a complete list of videos, visit our video library