QUESTION RESOURCE(S) TEST RESOURCE(S) Tools NR 3 0% Tools Numerical Response Use the following information to answer question 1 1 and numerical-response question 3. 3. The magnitude of the electric force, F., expressed in scientific notation, is a.bc x 10 N The values of a, b, c, and d are and An experiment is performed using an initially neutral metal sphere and the positively a b C charged dome on a Van de Graaff generator. The metal sphere, which hangs on a thread, (Record all four digits of your answer in the response area at the bottom of the screen.) touches the dome of the generator and is then repelled. The mass of the metal sphere is 2.00 x 10 kg. Observations Analysis The diagram below illustrates the metal Three forces act on the metal sphere to sphere in equilibrium some distance produce equilibrium: the tension force, FT, from the centre of the dome of the the gravitational force, Fg, and the electric Van de Graaff generator. force, Fe. When vectors representing the forces are added, the vector addition diagram given below results. FT F 78.0 Dome of Van de Graaff 78.0 generator F