The factor fnow, in the Drake equation depends on A) whether a ...

[j.rubin]

The factor fnow, in the Drake equation depends on
 
  A) whether a civilization ever develops intelligence
  B) whether a planet has any kind of life on its surface right now
  C) how technologically advanced civilizations become
  D) how long civilizations survive once they have arisen

Question 2

A ball thrown horizontally from a point 24 m above the ground strikes the ground after traveling horizontally a distance of 18 m. With what speed was it thrown? (in this problem use g = 10 m/s2)
 
  A) 7.40 m/s
  B) 6.10 m/s
  C) 8.96 m/s
  D) 8.13 m/s
  E) g

[xoxo123]

Answer to Question 1

D

Answer to Question 2

D

[j.rubin]

Thanks for the timely response, appreciate it

[covalentbond]

Wow, this really help