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

Author Question: Explain what a standard candle is and how it could be used to determine a galaxy's distance. What ... (Read 120 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
on: Jul 27, 2018
Explain what a standard candle is and how it could be used to determine a galaxy's distance.
 
  What will be an ideal response?

Question 2

The ________ tides have a large change from high to low, near new and full moons.
 
  Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 27, 2018
Answer to Question 1

A standard candle is an object with a well-known luminosity, such as a Type I supernova. If we see a standard candle in a distant galaxy, we can measure its apparent brightness and use the inverse-square law to determine its distance.

Answer to Question 2

spring


tuffie

  • Hero Member
  • *****
  • Posts: 534
Reply #2 on: Jul 27, 2018
Thanks


leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Giant Elliptical Galaxy M87 Giant Elliptical Galaxy M87
Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s
How to manually find the mean, variance, and standard deviation for a set of numbers How to manually find the mean, variance, and standard deviation for a set of numbers
Please explain the different Rf values for xanthophyll’s in paper chromatography compared to ... Please explain the different Rf values for xanthophyll’s in paper chromatography compared to ...
Advent pink candle Advent pink candle
Use of synthetic mRNAs to determine genetic code possibilities Use of synthetic mRNAs to determine genetic code possibilities
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library