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+clc;
+disp("Example 6.4")
+r=0.5 // radius in cm
+volume=4*%pi*r*r*r/3
+mass=0.05 // in g
+density=mass/volume
+liquiddensity=0.9 // in g/cc
+if(density<liquiddensity)
+ F=volume*981*(density-liquiddensity)
+ disp(F,"The drag force is ")
+ disp(" dynes")
+end