« previous next »

Author Question: About how many times more luminous than our Sun is a young solar mass protostar just beginning ... (Read 19 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?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Young male Pacific Walruses on Cape Pierce in Alaska. Note the variation in the curvature and orient Young male Pacific Walruses on Cape Pierce in Alaska. Note the variation in the curvature and orient
A young elephant in Zimbabwe. A young elephant in Zimbabwe.
Generally, the total tax burden in the United States is much lower than that of other industrialize Generally, the total tax burden in the United States is much lower than that of other industrialize
Chemistry for Changing Times Chemistry for Changing Times
Mass Wasting Triggers Mass Wasting Triggers
He element M forms the chloride MCl4 containing 75.0% Cl by mass. What is the atomic weight of ... He element M forms the chloride MCl4 containing 75.0% Cl by mass. What is the atomic weight of ...
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library