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

Author Question: A star's luminosity is the A) total amount of energy that the star radiates each second. B) ... (Read 59 times)

NguyenJ

  • Hero Member
  • *****
  • Posts: 516
on: Jul 27, 2018
A star's luminosity is the
 
  A) total amount of energy that the star radiates each second.
  B) total amount of energy that the star will radiate over its entire lifetime.
  C) surface temperature of the star.
  D) lifetime of the star.
  E) apparent brightness of the star in our sky.

Question 2

The stars in our sky twinkle in brightness and color because of ________.
 
  A) rapid changes in the brightnesses and colors of stars caused by changes in their spectra
  B) turbulence in the Earth's atmosphere
  C) the bubbling and boiling of gases on the surfaces of stars
  D) light pollution


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

GCabra

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


NguyenJ

  • Member
  • Posts: 516
Reply 2 on: Jul 27, 2018
Gracias!

peter

  • Member
  • Posts: 330
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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.

Basic energy of a human life Basic energy of a human life
Star Map Southern Horizon Star Map Southern Horizon
A Star with Three Planets A Star with Three Planets
Find the final amount if the initial amount is 400 units. Find the final amount if the initial amount is 400 units.
Immunofixation electrophoresis. (a) IgG kappa myeloma, (b) Controls showing total serum protein ... Immunofixation electrophoresis. (a) IgG kappa myeloma, (b) Controls showing total serum protein ...
The Energy Sector The Energy Sector
Video: Stress and Immune System Animation

For a complete list of videos, visit our video library