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

Author Question: When a star collapses to half size, the gravitational field at its surface A) doubles. B) ... (Read 101 times)

Sportsfan2111

  • Hero Member
  • *****
  • Posts: 585
When a star collapses to half size, the gravitational field at its surface
 
  A) doubles.
  B) quadruples.
  C) increases eightfold.
  D) remains constant.

Question 2

Compared to the event horizon, the photon sphere of a black hole is
 
  A) nearer the singularity.
  B) farther from the singularity.
  C) at the same location.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kingfahad97

  • Sr. Member
  • ****
  • Posts: 308
Answer to Question 1

Answer: B

Answer to Question 2

Answer: B




Sportsfan2111

  • Member
  • Posts: 585
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)


anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

For a complete list of videos, visit our video library