Author Question: The factor fnow, in the Drake equation depends on A) whether a civilization ever develops ... (Read 36 times)

j.rubin · **on:** Jul 27, 2018

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