We commonly say that there are two types of electric charges, positive and negative. Imaginetwo charges Q and q are separated by a distance r as shown.QWe construct a unit vector î pointing from Q to q. Then the force exerted on q by Q is given byCoulomb's Law:on q1 qQ= CE Απερ 12ÎHere CE is either +1 or -1.A. Which value of CE correctly expresses the direction of the force exerted on q by Q for allfour combinations of the two charges being positive or negative? You may find it usefulto build a table of the four possible sign combinations and the direction of the forceon q for each combination.For two masses, the gravitational interaction is given by Newton's Law of Gravitation, which we write as:MFon m = CGGmMr²-↑where CG is similarly either +1 or -1.B. Which value of CG correctly expresses the direction of the force exerted on m by M?

A.Given two charges Q and q separated by distance r between them.The Coulomb force exerted on q by Q…

Answered: We commonly say that there are two…

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