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 147 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
Great answer, keep it coming :)

  • Member
  • Posts:
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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?

Your heart beats over 36 million times a year.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

A star-forming region in the Large Magellanic Cloud. A star-forming region in the Large Magellanic Cloud.
This diagram shows a cross-section of a solar-type star. This diagram shows a cross-section of a solar-type star.
Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t
A Rotating, Magnetized Neutron Star A Rotating, Magnetized Neutron Star
One Module of the Primary Visual Cortex One Module of the Primary Visual Cortex
The visual areas of the human cerebral cortex. The visual areas of the human cerebral cortex.
Video: Introduction to Genetics

For a complete list of videos, visit our video library