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 225 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
Wow, this really help

miss.ashley

  • Member
  • Posts: 371
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Body plan of an echinoderm, as represented by a sea star. Body plan of an echinoderm, as represented by a sea star.
Gaser and Schlaug's study of the size of visual, motor, and auditory nuclei in the brains of mu Gaser and Schlaug's study of the size of visual, motor, and auditory nuclei in the brains of mu
Visual Acuity Testing, Snellen Vision Chart Visual Acuity Testing, Snellen Vision Chart
Proper Motion of Barnard’s Star Proper Motion of Barnard’s Star
Star-Nosed Mole Star-Nosed Mole
Florometra Crinoid or Feather Star, Phylum Echinodermata. Monterey Canyon, California. Florometra Crinoid or Feather Star, Phylum Echinodermata. Monterey Canyon, California.
Video: Griffith's experiments

For a complete list of videos, visit our video library