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 75 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
Excellent

connor417

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Cell Cycle Cell Cycle
GTP Cycle GTP Cycle
Under what conditions can part-time employment in high school be a negative influence on school ... Under what conditions can part-time employment in high school be a negative influence on school ...
The hydrologic cycle "الدورة الهيدرولوجية" The hydrologic cycle "الدورة الهيدرولوجية"
Physics: Power, Energy and Time Physics: Power, Energy and Time
The eukaryotic cell cycle consists of two parts: (1) interphase and (2) mitosis followed by cytokine The eukaryotic cell cycle consists of two parts: (1) interphase and (2) mitosis followed by cytokine
Video: X chromosome inactivation in calico cats

For a complete list of videos, visit our video library