Suppose the average mass of raindrops is 3.0 xx 10^(-5) kg and their average terminal velocity 9 ms^(-1) . Calculate the energy transferred by rain to each square metre of the surface at a place which receives 100 cm of rain in a year.

Suppose the average mass of raindrops is 3.0 xx 10^(-5) kg and their a

1.	Suppose the average mass of raindrops is 3.0 xx 10^(-5) kg and their average terminal velocity 9 ms^(-1) . Calculate the energy transferred by rain to each square metre of the surface at a place which receives 100 cm of rain in a year.
Answer» Solution :`M = 3.0 xx10^(-5)` KG V = 9m/s h = 100 cm = 1m `rho =10^(3) kg//m^(3)` `A = 1m^(2)` , V = Area `XX` height = `A xxh` ` = 1xx1= 1m^(3)` Mass of the water due to rain , `M = V xxrho` ` = 1xx10^(3)` `=10^(3)` kg ` :. ` Energy transferredto the SURFACE , `E = 1/2 mv^(2)` `=1/2 xx10^(3) xx(9)^(2)` `= 40.5 xx10^(3) J ` ` = 4.05 xx10^(4)` J