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

Author Question: If the orbital velocity of an eclipsing binary is 97 km/s and the smaller star is completely ... (Read 39 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Jul 27, 2018
If the orbital velocity of an eclipsing binary is 97 km/s and the smaller star is completely eclipsed in 2 hours, what is the diameter of the smaller star?
 
  a. 175,000 km
  b. 350,000 km
  c. 194 km
  d. 700,000 km
  e. 4656 km

Question 2

The main reason for building large optical telescopes on Earth's surface is
 
  a. that there is a lot of money in science that needs to get spent.
  b. to collect as much light as possible from faint objects.
  c. to nullify the blurring effects of the Earth's atmosphere and thus produce higher resolution images.
  d. to bring astronomical objects closer to make them brighter.
  e. that the warm temperatures of the Earth's surface allow for easier telescope operation.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

debra928

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 27, 2018
Answer to Question 1

d

Answer to Question 2

b


acc299

  • Member
  • Posts: 569
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

jomama

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

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.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Yellow Star Grass Yellow Star Grass
Help With Orbital Mechanic Homework!! Help With Orbital Mechanic Homework!!
Reduced mobility in late adulthood often results in more limited activities and smaller social ... Reduced mobility in late adulthood often results in more limited activities and smaller social ...
The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ... What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ...
A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to
Video: Effect of blood chemistry - stimuli, hyperventilation response and hypoventilation response

For a complete list of videos, visit our video library