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Electrostatic force on a charged parricle is given by overset(.)F=qvec(E). If q is positive vec(F)uarrrArrvec(E)uarr and if q negative vec(F) uarr rArr vec(E ) darr Question : In the figure m_(A) = m_(B) =1kg. BlockA is neutral while q_(B) = - 1C. Sizes of A and B are negligible. B is relased from rest at a distance 1.8 m from A. Initially spring is neither compressed nor elongated If cllision between A and B is perfectly inlastic, what is velocity of combined mass just after collision ?

Answer»

6 m/s
3 m/s
9 m/s
12 m/s

Answer :B


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