Question

0.2
A cluster of clouds at a height of 1000 m above the earth burst and enough rain fell to cover an area of
1000000m² with a depth of 2 cm. How much work have been done in raising water of the height of clouds.
(Take g=9.8 ms 2 and density of water = 103 kg m-3)
(A) 1.96 x 1011 (B) 1.96 10'J (C) 1.5 * 10' ) (D) 2.5 1013 J
ALIAN ..:: tinnen
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enumerounai
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Answer 1

Answer:

(A)1.96 x 10^11 j

Explanation:

W=F.s

=m*a*s

=(density*volume)*g*h               (because, density =mass/volume)

=10^3*(area*depth)*9.8*10^3     (because volume= area*depth)  

=10^3*10^6*2*10^-2*9.8*10^3

=1.96*10^11 J