« previous next »

Author Question: What is Hubble's law? A) The longer the time period between peaks in brightness, the greater the ... (Read 120 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
on: Jul 27, 2018
What is Hubble's law?
 
  A) The longer the time period between peaks in brightness, the greater the luminosity of the Cepheid variable star.
  B) The recession velocity of a galaxy is directly proportional to its distance from us.
  C) The recession velocity of a galaxy is inversely proportional to its distance from us.
  D) The faster a spiral galaxy's rotation speed, the more luminous it is.
  E) The faster a spiral galaxy's rotation speed, the less luminous it is.

Question 2

Nonscientific practices that make no claims about how the natural world works do not conflict with science.
 
  Indicate whether the statement is true or false


bbburns21

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Nerves can transmit many signals at the same time Nerves can transmit many signals at the same time
Greater wings Greater wings
Richmond, Virginia, lies in ruins in April 1865 at the time of Lincoln’s visit—and a few days before Richmond, Virginia, lies in ruins in April 1865 at the time of Lincoln’s visit—and a few days before
End of last glacial period End of last glacial period
Disitive Time For Milk Products Disitive Time For Milk Products
Fetal Period Fetal Period
Video: Chemical Equilibrium between N2O4 (colorless gas) and NO2 (brown gas)

For a complete list of videos, visit our video library