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Q. An electron starts from rest 5.00 cm from the center of a uniformly charged sphere of radius 4.00 cm. If the sphere carries a total charge of 1.00 x10-9 C, how fast will the electron be moving when it reaches the surface of the sphere?

Q. A certain Christmas tree ornament is a silver sphere having a diameter of 8.10 cm. Determine an object location for which the size of the reflected image is four-fifths the size of the object. Use a principal-ray diagram to arrive at a description of the image.

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Category:- Physics
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