« previous next »

Author Question: How many stars can you see with your naked eye on a clear, moonless night from a dark location? ... (Read 78 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Jul 27, 2018
How many stars can you see with your naked eye on a clear, moonless night from a dark location?
 
  A) fewer than a thousand
  B) a few thousand
  C) about ten thousand
  D) about a hundred thousand
  E) more than you could count in your lifetime

Question 2

A 20 solar mass star will stay on the main sequence for 10 million years, yet its iron core can exist for only a
 
  A) day.
  B) week.
  C) month.
  D) year.
  E) century.


sokh

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


sokh

  • Sr. Member
  • ****
  • Posts: 357
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

The cypress hills in Alberta and Saskatchewan were the northern-most location that remained south of The cypress hills in Alberta and Saskatchewan were the northern-most location that remained south of
Amsterdam Albatross - Adult in flight, showing dark plumage typical of the species. Amsterdam Albatross - Adult in flight, showing dark plumage typical of the species.
mushroom that glow in the dark mushroom that glow in the dark
An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.
Location of the Heart Location of the Heart
Video: Introduction to Epilepsy

For a complete list of videos, visit our video library