<![CDATA[The electric force on a static electric charge is often a lesson that is difficult to be understanded for both of school students or scolar. Due to this phenomenon include a very small objects be one of the causes this analogy phenomenon is too difficult to implements in life being. Eventhough the electric force is responsible for the motion of the human body, besides the calculations are quite difficult sometimes the concept of electric force becomes a constraint because the force is vector quantities and will be difficult if the system consists is three or more static electric charges instead of scalar quantities that only plus or minus for attractive or repulsife quantities. The use of Graphic User Interface (GUI) is one of alternative media that be useable for students in calculating and analyzing the magnitude and direction of the force by a charge in system. The GUI is designed to make students more be effective and efficient in calculating the electric force.]]>
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