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

Author Question: During the hydrogen shell burning phase: A) the star grows more luminous. B) the star becomes ... (Read 188 times)

BRWH

  • Hero Member
  • *****
  • Posts: 553
on: Jul 27, 2018
During the hydrogen shell burning phase:
 
  A) the star grows more luminous.
  B) the star becomes less luminous.
  C) helium is burning in the core.
  D) the core is expanding.
  E) hydrogen is burning in the central core.

Question 2

The Drake equation now tells us that the number of technological civilizations in our Galaxy at this time is:
 
  A) only our own.
  B) five to ten at most.
  C) perhaps 3,000.
  D) millions.
  E) not known; insufficient data to compute.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

josephsuarez

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

E


BRWH

  • Member
  • Posts: 553
Reply 2 on: Jul 27, 2018
Wow, this really help

deja

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Shooting star Shooting star
Hydrogen bond Hydrogen bond
How many hydrogen ions (H+) are present and on what side of the chemical equation? How many hydrogen ions (H+) are present and on what side of the chemical equation?
Florometra Crinoid or Feather Star, Phylum Echinodermata. Monterey Canyon, California. Florometra Crinoid or Feather Star, Phylum Echinodermata. Monterey Canyon, California.
Video: Monohybrid crosses

For a complete list of videos, visit our video library