« previous next »

Author Question: All modern large optical telescopes are refractors. Indicate whether the statement is true or ... (Read 117 times)

fnuegbu

  • Hero Member
  • *****
  • Posts: 539
on: Jul 27, 2018
All modern large optical telescopes are refractors.
 
  Indicate whether the statement is true or false

Question 2

The Sun, at absolute magnitude +4.8, would be one of the brightest stars in the sky if seen from 32 light-years distance.
 
  Indicate whether the statement is true or false


Chocorrol77

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 27, 2018
Answer to Question 1

FALSE

Answer to Question 2

FALSE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Large Skipper Large Skipper
Southern Royal Albatross, Diomedea epomophora, is a large seabird from the albatross family. Southern Royal Albatross, Diomedea epomophora, is a large seabird from the albatross family.
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Erythrocytes contain large amounts of the oxygen-transporting protein Erythrocytes contain large amounts of the oxygen-transporting protein
Features of the skull of anatomically modern Homo sapiens. Features of the skull of anatomically modern Homo sapiens.
Although Neandertal brain sizes fall well within the modern human range, their EQ is lower than mode Although Neandertal brain sizes fall well within the modern human range, their EQ is lower than mode
Video: Ear Animation

For a complete list of videos, visit our video library