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SPH4U | Physics 12 emmunication (14 points) 1. C Can the work done by a force be negative? If yes, how. Give an example in

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SPH4U | Physics 12 emmunication (14 points) 1. C Can the work done by a force be negative? If yes, how. Give an example in support of your answer. [C 1] RISH 4920 8. Explain the difference between constructive and destructive interference by drawing a diagram. [C 2] P70 denoth mavs emomoo b . State the direction of force on a positive charge moving in the following fields. Also, state the equation/rule [C 2] you used to determine it: a) An electric field directed east b) A magnetic field directed east 10. Explain how centripetal acceleration of an object varies with distance from the centre of its circular [C 2] path. F-5

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