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

Author Question: In a spectroscopic binary system, the star showing the larger blue shift is A) cooler and ... (Read 183 times)

go.lag

  • Hero Member
  • *****
  • Posts: 667
on: Jul 27, 2018
In a spectroscopic binary system, the star showing the larger blue shift is
 
  A) cooler and receding the fastest.
  B) less massive of the pair and receding slower.
  C) more massive and approaching us.
  D) less massive and approaching us at this moment.
  E) hotter and receding faster.

Question 2

You are a novice telescope builder. Should you attempt a 6 Newtonian or Cassegrain reflector first? Why?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

abro1885

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

The Newtonian uses only a curved main mirror and a small flat secondary. The primary for the Cassegrain also needs a hole to be drilled in its center, and its small secondary is convex in shape, harder to make than the flat for the Newtonian.


go.lag

  • Member
  • Posts: 667
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

mammy1697

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

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

A closed circulatory system. A closed circulatory system.
Blue morpho butterfly egg Blue morpho butterfly egg
Chrysler Salon, N. Y. C., showing the 1937 Chrysler Airflow four-door sedan on display in the ... Chrysler Salon, N. Y. C., showing the 1937 Chrysler Airflow four-door sedan on display in the ...
Notice the small motor gear on the left drives a larger plastic gear (black), which then drives ... Notice the small motor gear on the left drives a larger plastic gear (black), which then drives ...
A gradient of bicoid mRNA (blue stain) as concentrated in anterior region A gradient of bicoid mRNA (blue stain) as concentrated in anterior region
Complement System Complement System
Video: TRH/TSH/Thyroid hormone

For a complete list of videos, visit our video library