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

Author Question: Helium originates from A) stellar nucleosynthesis only. B) the Big Bang only. C) mostly from ... (Read 145 times)

Haya94

  • Hero Member
  • *****
  • Posts: 558
on: Jul 27, 2018
Helium originates from
 
  A) stellar nucleosynthesis only.
  B) the Big Bang only.
  C) mostly from stellar nucleosynthesis with a small contribution from the Big Bang.
  D) radioactive decay of elements heavier than carbon.
  E) mostly from the Big Bang with a small contribution from stellar nucleosynthesis.

Question 2

As an interstellar cloud of hydrogen gas shrinks in size, its rate of rotation
 
  A) increases, because its total energy is conserved.
  B) decreases, because the force of gravity strengthens as the cloud shrinks.
  C) increases, because its angular momentum is conserved.
  D) decreases, because its angular momentum is conserved.
  E) increases, because the force of gravity strengthens as the cloud shrinks.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ApricotDream

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

E

Answer to Question 2

C


Haya94

  • Member
  • Posts: 558
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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.

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?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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.

Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
Liquid helium Liquid helium
Stellar Size and Spectra Stellar Size and Spectra
Stellar Birth Rates Stellar Birth Rates
A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ... A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ...
If the solubility of helium is 0.94 cc per 100 cc of blood at 1.00 atmosphere, w If the solubility of helium is 0.94 cc per 100 cc of blood at 1.00 atmosphere, w
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library