3622/CH2/EX2.3/Ex2_3.sce


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//Initialisation of variables
clc
a=10^(-5)
d=1
e=4.8*10^(-10)
g=980
X=4*%pi*a^3*d*g/(3*e)
printf('field required to keep drop stationary is %e esu per cm \n',X)