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

Author Question: The star Algol is a. an astrometric binary. b. a spectroscopic binary. c. a visual binary. d. ... (Read 241 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
on: Jul 27, 2018
The star Algol is
 
  a. an astrometric binary.
  b. a spectroscopic binary.
  c. a visual binary.
  d. an eclipsing binary.
  e. a spectroscopic binary and an eclipsing binary.

Question 2

Which of the following features of a telescope determines its light-gathering power?
 
  a. the focal length of the primary lens
  b. the focal length of the eyepiece
  c. the diameter of the primary lens
  d. length of the telescope tube
  e. None of the other choices are correct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

pami445

  • Sr. Member
  • ****
  • Posts: 303
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

c


frankwu

  • Member
  • Posts: 549
Reply 2 on: Jul 27, 2018
Excellent

JaynaD87

  • Member
  • Posts: 368
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

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?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

A visual pigment. A visual pigment.
Visual Pathway Visual Pathway
Properties of the Magnocellular, Parvocellular, and Koniocellular Divisions of the Visual System Properties of the Magnocellular, Parvocellular, and Koniocellular Divisions of the Visual System
Visual Object Agnosia Without Prosopagnosia Visual Object Agnosia Without Prosopagnosia
The visual areas of the human cerebral cortex. The visual areas of the human cerebral cortex.
Restricting visual information to one hemisphere in cats. To restrict visual information to one ... Restricting visual information to one hemisphere in cats. To restrict visual information to one ...
Video: Structure of a Ribosome

For a complete list of videos, visit our video library