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SMALL spere of mass m is suspended from a common point by threads , make an angle 37 deg when it placed in an electric field E=(3i+5j) *10^5 N/C find the charge of sphere , and the tension t
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TWO small spheres of mass m are susoended from a common point by threds of length L .when each sphere carries a charge q , each threads makes an angle 1 with the vertical
show that the charge q given by :
q=2L Sin(1) [mg Tan(1) /k] 1/2
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