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

Author Question: The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines. ... (Read 91 times)

K@

  • Hero Member
  • *****
  • Posts: 608
on: Jul 27, 2018
The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines.
 
  Indicate whether the statement is true or false

Question 2

If the Sun-Earth separation were 10 AU instead of 1 AU, what would the ux of sunlight (energy per second per square meter) be at the Earth, compared to what it is today?
 
  A) 100 times more
  B) 10 times less
  C) about 3.16 (or the square root of 10 ) times less
  D) 10 times more
  E) 100 times less


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ally

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

FALSE

Answer to Question 2

E


K@

  • Member
  • Posts: 608
Reply 2 on: Jul 27, 2018
:D TYSM

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

The Sun’s Rotation The Sun’s Rotation
The enhanced greenhouse effect The enhanced greenhouse effect
Moving currents are affected by Earth’s rotation Moving currents are affected by Earth’s rotation
The Serial-Position Effect The Serial-Position Effect
The ancestral and modern-day tomato. (b) Phenotypic effect of the fw2.2 transgene in the tomato The ancestral and modern-day tomato. (b) Phenotypic effect of the fw2.2 transgene in the tomato
Effect of Phosphate Pollution Effect of Phosphate Pollution
Video: Sickle Cell Anemia

For a complete list of videos, visit our video library