« previous next »

Author Question: The Drake equation calculates N. What is N? A) the number of intelligences in the entire universe ... (Read 54 times)

theo

  • Hero Member
  • *****
  • Posts: 698
on: Jul 27, 2018
The Drake equation calculates N. What is N?
 
  A) the number of intelligences in the entire universe
  B) the number of technical civilizations in our galaxy presently
  C) the number of stars with habitable planets
  D) the number of planets with life in the universe
  E) the number of planets in just our galaxy

Question 2

At which stage in a Sun-like star's life is its core the least dense?
 
  A) Main Sequence
  B) Subgiant Branch
  C) Helium Fusion
  D) Planetary Nebula
  E) White Dwarf


Eunice618

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Relationship between the number of CAG repeats in a gene and the age of onset of Huntington disease. Relationship between the number of CAG repeats in a gene and the age of onset of Huntington disease.
Estimated Number of New Sexually Transmitted Infections Estimated Number of New Sexually Transmitted Infections
How to count for the correct number of significant digits How to count for the correct number of significant digits
Alcoholic fermentation Chemical Equation Alcoholic fermentation Chemical Equation
Number line (5 - 1) Number line (5 - 1)
Number line for rounding Number line for rounding
Video: Cardiac Cycle (Part 2 of 4)

For a complete list of videos, visit our video library