Author Question: The percentage (by mass) of the Sun that is helium is about: A) 91. B) 71. C) 27. D) 9. E) ... (Read 40 times)

michelleunicorn

  • Hero Member
  • *****
  • Posts: 565
The percentage (by mass) of the Sun that is helium is about:
 
  A) 91.
  B) 71.
  C) 27.
  D) 9.
  E) less than 1.

Question 2

Sometime within the next million years or so, their planet is likely to be doomed because
 
  A) jets of material shot out of the accretion disk will shoot down their planet.
  B) their planet receives most of its energy from the red giant. However, this star will soon be completely devoured in the accretion disk and thus will no longer exist.
  C) the red giant will probably undergo a supernova explosion within the next million years.
  D) tidal forces from the black hole will rip the planet apart.
  E) the planet's orbit gradually will decay as it is sucked in by the black hole.



reversalruiz

  • Sr. Member
  • ****
  • Posts: 327
Answer to Question 1

C

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

For a complete list of videos, visit our video library