« previous next »

Author Question: How many stars can you see with your naked eye on a clear, moonless night from a dark location? ... (Read 42 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?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Division of labour among castes of leafcutter ants, Atta sexdens, and naked mole rats, Heterocephalu Division of labour among castes of leafcutter ants, Atta sexdens, and naked mole rats, Heterocephalu
Location of the Sinuses (Sphenoid Sinuses are Directly Behind Ethmoid Sinuses) Location of the Sinuses (Sphenoid Sinuses are Directly Behind Ethmoid Sinuses)
The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006. The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006.
Examples of Body Regions and Their Location Examples of Body Regions and Their Location
The location of the fusiform face area and the MT area: Damage to the fusiform face area is ... The location of the fusiform face area and the MT area: Damage to the fusiform face area is ...
A genetic map showing the location of revertible (point) mutants of the rll region A genetic map showing the location of revertible (point) mutants of the rll region
Video: Protein catabolism - deamination

For a complete list of videos, visit our video library