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

Author Question: When the nuclear reactions begin making too little energy in a star, by virtue of the natural ... (Read 39 times)

LaDunn

  • Hero Member
  • *****
  • Posts: 526
on: Jul 27, 2018
When the nuclear reactions begin making too little energy in a star, by virtue of the natural thermostat, the star:
 
  A) would expand slightly.
  B) would reduce its central temperature.
  C) would increase its density.
  D) would increase the mass by a factor of 2.

Question 2

Only photons with wavelengths _____ can ionize hydrogen.
 
  A) shorter than 91.2 nm
  B) longer than 104.3 nm
  C) shorter than 40 nm
  D) longer than 80 nm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

morganmarie791

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

A


LaDunn

  • Member
  • Posts: 526
Reply 2 on: Jul 27, 2018
Gracias!

sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Energy coupling in mechanical and chemical processes Energy coupling in mechanical and chemical processes
Structural similarities between antimetabolites and their natural counterparts. Structural similarities between antimetabolites and their natural counterparts.
Accounting (Making Entries) Accounting (Making Entries)
The Sun and the radiant energy The Sun and the radiant energy
France has produced most of its energy from nuclear power since the oil crisis of the 1970s France has produced most of its energy from nuclear power since the oil crisis of the 1970s
Energy In, Energy Out Energy In, Energy Out
Video: Hemoglobin's affinity with oxygen - carbon dioxide, temperature and bisphosphoglycerate (BPG)

For a complete list of videos, visit our video library