This topic contains a solution. Click here to go to the answer

Author Question: In a large sampling of stars, the largest group represented in the H-R diagram will be the main ... (Read 22 times)

jessicacav

  • Hero Member
  • *****
  • Posts: 558
In a large sampling of stars, the largest group represented in the H-R diagram will be the main sequence stars. Why are they so common?
 
  What will be an ideal response?

Question 2

The Caloris Basin on Mercury covers a large region of the planet, but few smaller craters have formed on top of it. From this we conclude that
 
  A) erosion destroyed the smaller craters that formed on the basin.
  B) Mercury's atmosphere prevented smaller objects from hitting the surface.
  C) only very large impactors hit Mercury's surface in the past.
  D) the Caloris Basin formed toward the end of the solar system's period of heavy bombardment.
  E) the Caloris Basin was formed by a volcano.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

Like the Sun, they are young enough to have most of their initial hydrogen still not fused into helium; they will not evolve off the main sequence until the helium builds up a lot. Since hydrogen is by far the most abundant element and the easiest to fuse, most stars are going to use it as their major fuel, as long as the supply lasts. Stars spend the vast majority of their life spans on the main sequence.

Answer to Question 2

D




jessicacav

  • Member
  • Posts: 558
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)


amynguyen1221

  • Member
  • Posts: 355
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

For a complete list of videos, visit our video library