Author Question: The Arecibo radio telescope is laid out like which optical telescope design? A) prime focus ... (Read 87 times)

tingc95

  • Hero Member
  • *****
  • Posts: 556
The Arecibo radio telescope is laid out like which optical telescope design?
 
  A) prime focus reflector
  B) Newtonian reflector
  C) grazing incidence reflector
  D) Cassegrain reflector
  E) Coude reflector

Question 2

Describe the range of sizes and masses of black holes.
 
  What will be an ideal response?



bd5255

  • Sr. Member
  • ****
  • Posts: 386
Answer to Question 1

A

Answer to Question 2

The smallest, a three solar mass black hole, is only about 9 km across, but some in the cores of galaxies may be millions of solar masses and larger than the solar system.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

For a complete list of videos, visit our video library