« previous next »

Author Question: The ________ background radiation in fact far exceeds all the energy radiated by all the stars and ... (Read 54 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Jul 27, 2018
The ________ background radiation in fact far exceeds all the energy radiated by all the stars and galaxies that formed since then.
 
  Fill in the blank(s) with correct word

Question 2

The Balmer Beta absorption line is a result of a transition of an electron in a hydrogen atom from:
 
  A) level 2 to level 3.
  B) level 2 to level 4.
  C) level 3 to level 2.
  D) level 4 to level 2.
  E) None of the above.


nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

microwave

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Boundaries within landscapes created by human activity (background) and natural environmental gradie Boundaries within landscapes created by human activity (background) and natural environmental gradie
Adenosine triphosphate (ATP) provides energy Adenosine triphosphate (ATP) provides energy
Cuba’s Energy Geopolitics Cuba’s Energy Geopolitics
Activation energy Activation energy
A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in ... A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in ...
Expressing amounts of energy in different energy units is necessary to solve many chemistry ... Expressing amounts of energy in different energy units is necessary to solve many chemistry ...
Video: Burn Animation

For a complete list of videos, visit our video library