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

Author Question: What is the best time to see the corona? Why is it so faint, if it is so hot? What will be an ... (Read 99 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
on: Jul 27, 2018
What is the best time to see the corona? Why is it so faint, if it is so hot?
 
  What will be an ideal response?

Question 2

If we could watch spiral arms from a telescope situated above the Milky Way over 500 million years, what would we see happen?
 
  A) Stars will move through the spiral arms, bunching up closer as they pass through. Young hot stars will form and die within the arms before having a chance to move out.
  B) The spiral arms will eventually unwind, as centripetal forces send the stars flying outwards into intergalactic space.
  C) The spiral arms will eventually dissipate and fade away, since they are a temporary phenomenon that should only last for a million years or so.
  D) The spiral arms will seem to wind up, to wrap more and more tightly around the center of the Galaxy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

guyanai

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Jul 27, 2018
Answer to Question 1

In a total solar eclipse, the faint corona is seen briefly. It is so hot that most of its energy is X-rays, not light, and it is much less dense than the photosphere.

Answer to Question 2

A


jon_i

  • Member
  • Posts: 549
Reply 2 on: Jul 27, 2018
Gracias!

Liddy

  • Member
  • Posts: 342
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

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.

Time Line of Human History From Upper Paleolithic Period to the Present Time Line of Human History From Upper Paleolithic Period to the Present
The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ... The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ...
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Time course of HIV infection. Time course of HIV infection.
Very nice definition of time Very nice definition of time
Disitive Time For Nuts Disitive Time For Nuts
Video: Conduction of action potentials

For a complete list of videos, visit our video library