This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: From a theoretical standpoint, what is a pulsar? A) a star that alternately expands and contracts ... (Read 14 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
on: Jul 27, 2018
From a theoretical standpoint, what is a pulsar?
 
  A) a star that alternately expands and contracts in size
  B) a rapidly rotating neutron star
  C) a neutron star or black hole that happens to be in a binary system
  D) a binary system that happens to be aligned so that one star periodically eclipses the other
  E) a star that is burning iron in its core

Question 2

What is the average temperature of the surface of the Sun?
 
  A) 1 million K
  B) 100,000 K
  C) 10,000 K
  D) 6,000 K
  E) 1,000 K


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sailorcrescent

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

D


Capo

  • Member
  • Posts: 545
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

mjenn52

  • Member
  • Posts: 351
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

A white dwarf star in orbit around Sirius (artist's impression) A white dwarf star in orbit around Sirius (artist's impression)
The asymmetrical appearance of Mira, an oscillating variable star. The asymmetrical appearance of Mira, an oscillating variable star.
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Shooting star Shooting star
Star Map Southern Horizon Star Map Southern Horizon
Sunflower Sea Star, California. Sunflower Sea Star, California.
Video: Exocytosis - secretion

For a complete list of videos, visit our video library