Author Question: What is the approximate surface temperature of a star with weak hydrogen absorption lines and strong ... (Read 78 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
What is the approximate surface temperature of a star with weak hydrogen absorption lines and strong absorption lines of ionized calcium?
 
  A) 4,500 K B) 6,500 K C) 5,500 K D) 3,500 K

Question 2

Which jovian planet should have the most extreme seasonal changes?
 
  A) Uranus B) Saturn C) Neptune D) Jupiter



tkempin

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

C

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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.

For a complete list of videos, visit our video library