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Compute the all parts of following problem given below:
Problem: Two lenses, one converging with focal length 21.5cm and one diverging with focal length 12.0cm, are placed 25.0cm apart. An object is placed 60.0cm in front of the converging lens.
Part I: Find the final image distance from second lens. Follow the sign conventions.
Part II: Determine the magnification of the final image formed. Follow the sign conventions.
Please explain how you obtained the answer. Thanks.
A charge q is distributed uniformly around a thin ring of radius r. The ring is rotating about an axis through its center and perpendicular to its plane, at an angular speed w. What is the direction of this magnetic moment if the charge is positive?
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