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X physics pdf notes


https://drive.google.com/file/d/17_D92wNorBfzF4_yngLzIdLwGi6K_Ef0/view?usp=drivesdk  https://drive.google.com/file/d/12PUZ8Cuaj9R9CV6gyxMFFXgglLHhZjd3/view?usp…
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