« previous next »

Author Question: The Arecibo radio telescope is laid out like which optical telescope design? A) prime focus ... (Read 39 times)

tingc95

  • Hero Member
  • *****
  • Posts: 556
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
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
« previous next »
 

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

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

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

turbine design turbine design
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
Radio Views of Saturn Radio Views of Saturn
Donald Trump Optical Illusion Donald Trump Optical Illusion
A horizontally opposed engine design helps to lower the vehicle’s center of gravity. A horizontally opposed engine design helps to lower the vehicle’s center of gravity.
Telescope Telescope
Video: Arthroscopy

For a complete list of videos, visit our video library