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

Author Question: The _______________ of the moon is the period of time for the moon to complete a cycle of the lunar ... (Read 38 times)

cool

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
The _______________ of the moon is the period of time for the moon to complete a cycle of the lunar phases and is approximately 29.5 days long.
 
  a. sidereal period
  b. saros cycle
  c. synodic period
  d. eclipse season
  e. umbral period

Question 2

The hydrogen lines in spectral type A stars
 
  a. are most narrow for supergiants.
  b. are most narrow for main sequence stars.
  c. can not be used to estimate the luminosity of the star.
  d. are very weak and difficult to see.
  e. are useful in determining the apparent magnitude of the star.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

medine

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

A


cool

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Overview of the citric acid cycle Overview of the citric acid cycle
Planets, Earth and Moon Planets, Earth and Moon
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
The Workout (Primary Conditioning Period) The Workout (Primary Conditioning Period)
Relative expression times and amounts of cyclins during the cell cycle Relative expression times and amounts of cyclins during the cell cycle
Life cycle of the beef tapeworm (Taenia saginata). Life cycle of the beef tapeworm (Taenia saginata).
Video: Secondary Active Transport

For a complete list of videos, visit our video library