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

Author Question: Briefly summarize current knowledge about the term flife in the equation Number of Civilizations = ... (Read 40 times)

xclash

  • Hero Member
  • *****
  • Posts: 681
on: Jul 27, 2018
Briefly summarize current knowledge about the term flife in the equation
  Number of Civilizations = NHP  flife  fcivilization  fnow.
 
  What will be an ideal response?

Question 2

Why do we sometimes observe asteroids at the distances of the gaps in the asteroid belt?
 
  A) Jupiter's gravitational tugs keep them there.
  B) They are held in place by resonances with other asteroids.
  C) Actually, we never see asteroids in the gaps.
  D) They are kept in place by shepherding asteroids.
  E) A gap is located at an average orbital distance, and asteroid orbits often have large eccentricities.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

samiel-sayed

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 27, 2018
Answer to Question 1

flife is the fraction of habitable planets with life. We know that at least one planet within its star's habitability zone has developed life, namely the Earth, but beyond that, we have no real evidence on which to base an estimate of the value of flife.

Answer to Question 2

E


xclash

  • Member
  • Posts: 681
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

jordangronback

  • Member
  • Posts: 339
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

Your heart beats over 36 million times a year.

A full-term pregnancy. Image illustrates position of the fetus and the structures associated with pr A full-term pregnancy. Image illustrates position of the fetus and the structures associated with pr
Isotopes may be stable or radioactive depending on the arrangement and number of neutrons in the nuc Isotopes may be stable or radioactive depending on the arrangement and number of neutrons in the nuc
The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue
(a) The low-resolution signal has the same number of pulses as the engine has cylinders. (b) A ... (a) The low-resolution signal has the same number of pulses as the engine has cylinders. (b) A ...
Write equation for each function Write equation for each function
A rigid circular loop has a radius of 0.20 m and is in the xy-plane. A clockwise current I is ... A rigid circular loop has a radius of 0.20 m and is in the xy-plane. A clockwise current I is ...
Video: Predator- prey competition and symbiosis

For a complete list of videos, visit our video library