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 45 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
Wow, this really help

mammy1697

  • Member
  • Posts: 341
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

The energy input and output of glycolysis. The energy input and output of glycolysis.
Free Energy Enzymes Free Energy Enzymes
Thumb, knuckle slides, and kneading (as appropriate) to energy meridians in the upper arm in 5 ... Thumb, knuckle slides, and kneading (as appropriate) to energy meridians in the upper arm in 5 ...
Type of Interactions, Model, Examples and Dependence of Energy on Distance Type of Interactions, Model, Examples and Dependence of Energy on Distance
Energy Metabolism During anaerobic metabolism Energy Metabolism During anaerobic metabolism
Activation Energy Activation Energy
Video: Corpus Callosum Animation

For a complete list of videos, visit our video library