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USE A3 Movie 1: Interaction between + charged acrylic sheet and uncharged electroscope

USE A3 Movie 2: Interactions between uncharged electroscope and charged acrylic & Styrofoam

USE A3 Movie 3: Simulation of interactions between uncharged electroscope and charged acrylic & Styrofoam

USE A3 Movie 4: Two − charged Styrofoam plates held at two ends of uncharged electroscope

USE A3 Movie 5: Simulation of experiment shown in Movie 4