(a) What must the charge (sign and magnitude) of a 1.45-g

Solution 29E Step 1 of 5: Weight is the force exerted by an object like earth on the other objects having mass. It is due to the weight of the object, as given below, when an object of mass m placed on table, Weight, W= mg Where m is the mass of the object and g is the acceleration due to gravity Electric field strength is the force exerted by the charge at point per unit charge. That is force per unit charge. E = Force/charge = F/q Therefore Electrostatic force, F = E q Where E is the electric field strength, F is the force and q is the charge.