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

Author Question: An eclipsing binary will a. be more luminous than a visual binary. b. also be observed as a ... (Read 81 times)

schs14

  • Hero Member
  • *****
  • Posts: 569
on: Jul 27, 2018
An eclipsing binary will
 
  a. be more luminous than a visual binary.
  b. also be observed as a spectroscopic binary.
  c. give off most of its light in the infrared.
  d. show a constant Doppler shift in its spectral lines.
  e. show two stars with variable proper motion.

Question 2

The pupil of the human eye is approximately 0.8 cm in diameter when adapted to the dark. The ratio of the light-gathering power of a 1.6-m telescope to that of the human eye is ____.
 
  a. 2
  b. 4
  c. 20
  d. 400
  e. 40,000


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

e


schs14

  • Member
  • Posts: 569
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

triiciiaa

  • Member
  • Posts: 349
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Cyanide works by making the human body unable to use oxygen.

How the law of segregation of alleles explains Mendel's observed ratios How the law of segregation of alleles explains Mendel's observed ratios
Visual Acuity Testing, Snellen Vision Chart Visual Acuity Testing, Snellen Vision Chart
Alexander Fleming photographed in his lab where he observed the natural competition between a fungus Alexander Fleming photographed in his lab where he observed the natural competition between a fungus
Center of Mass of a Binary Star System Center of Mass of a Binary Star System
Primary visual processing areas (blue) in (a) human (lateral and mesial views) and (b) chimpanzee. Primary visual processing areas (blue) in (a) human (lateral and mesial views) and (b) chimpanzee.
Psychological Dimensions of the Visual World Psychological Dimensions of the Visual World
Video: Bond types - Atomic structure and basis of bonds

For a complete list of videos, visit our video library