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+//Example 18.5
+m=4*10^-15;//Mass of gasoline drop (kg)
+g=9.80;//Acceleration due to gravity (m/s^2)
+w=m*g;//Weight of the drop (N)
+printf('a.Weight of the drop = %0.2e N',w)
+q=3.20*10^-19;//Charge (C)
+E=3*10^5;//Electric field strength (N/C)
+F=q*E;//Electric force (N)
+printf('\nb.Electric force on the drop = %0.2e N',F)
+F_net=F-w;//Net Force (N)
+a=F_net/m;//Acceleration (m/s^2)
+printf('\nc.Acceleration of the drop = %0.1f m/s^2',a)
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest