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

Author Question: Roughly how many stars are within 4 parsecs of the solar system? A) 3 B) 30 C) 3000 D) 300,000 ... (Read 49 times)

chandani

  • Hero Member
  • *****
  • Posts: 541
on: Jul 27, 2018
Roughly how many stars are within 4 parsecs of the solar system?
 
  A) 3
  B) 30
  C) 3000
  D) 300,000
  E) 200 billion

Question 2

A solar mass star will evolve off the main sequence when:
 
  A) it completely runs out of hydrogen.
  B) it expels a planetary nebula to cool off and release radiation.
  C) it explodes as a violent nova.
  D) it builds up a core of inert helium.
  E) it loses all its neutrinos, so fusion must cease.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

gabrielle_lawrence

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

D


chandani

  • Member
  • Posts: 541
Reply 2 on: Jul 27, 2018
Excellent

nanny

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

The Sun is the star at the center of the Solar System. The Sun is the star at the center of the Solar System.
Concept map of disease and immune system Concept map of disease and immune system
The level in the coolant recovery system raises and lowers with engine temperature. The level in the coolant recovery system raises and lowers with engine temperature.
Pressure drop after 10 minutes on a normal port fuel-injection system. Pressure drop after 10 minutes on a normal port fuel-injection system.
The location of the major limbic system structures. In general, they are arrayed near the midline in ... The location of the major limbic system structures. In general, they are arrayed near the midline in ...
Solar system Solar system
Video: Dietary Cholesterol & LDL

For a complete list of videos, visit our video library