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[" 21.An object has a displacement from "],[" position vector "vec r_(1)=(2hat i+3hat j)m" to "],[vec r_(2)=(4hat i+6hat j)m" under a force "],[vec F=(3x^(2)hat i+2yhat j)N," then work done by the "],[" force is "]

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An object has a displacement from position vector vecr_(1) = (2 hat i+3hatj)m to vecr_(2) = (4hat i + 6 hat j)m under a force vec F = (3x^(2) hati + 2y hatj)N , then work done by the force is

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