A-Level Physics Question and Answers 2020/2021

Answer outline and marking scheme for question: 1. a) 2i) F E proportional to 1/r2 or F E = Q /(4ðå 0 r2) or in words ii) F G proportional to (-) 1/r 2 or F G = (-) m 2G/r2) or in words (2 Marks) b) Eletrostatic forces (between protons) always repulsive gravitational forces always attractive (1 Mark) c) (at equal seperations) magnitude of F E ... ................
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