How much work does an elephant do while moving a circus wagon 20 meters with a pulling of 200N?

4000 N

Explanation:

This is because if you mutiply  20 and 200 you get 4000

d. air pressure decreases as altitude increases.

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j