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

Author Question: A pair of stars orbit around one another in an elliptical orbit with a semi-major axis, a, of 1 AU ... (Read 91 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
A pair of stars orbit around one another in an elliptical orbit with a semi-major axis, a, of 1 AU with an orbital period, P, of 1 year. What is the mass of the pair of stars?
 
  a. 1 solar masses
  b. 2 solar masses
  c. 4 solar masses
  d. 8 solar masses
  e. 16 solar masses

Question 2

An ordinary glass lens forms an image by ____________ of light.
 
  a. reflection
  b. refraction
  c. diffraction



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

phuda

  • Sr. Member
  • ****
  • Posts: 348
Answer to Question 1

a

Answer to Question 2

b




Marty

  • Member
  • Posts: 553
Reply 2 on: Jul 27, 2018
Excellent


mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

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?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...

For a complete list of videos, visit our video library