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////
//Variable Declaration
D = 1.0e-5 //Diffusion coefficient, m2/s
t1 = 1000 //Time, s
t10 = 10000 //Time, s
//Calculations
xrms1 = sqrt(2*D*t1)
xrms10 = sqrt(2*D*t10)
//Results
printf("\n rms displacement at %4d and %4d is %4.3f and %4.3f m respectively",t1,t10,xrms1,xrms10)
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