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A physical quantity is measured as Q = (...

A physical quantity is measured as Q = `(2.1 pm 0.5)` units. Calculate the percentage error in (1) `Q^(2)(2)2Q`

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`P = Q^(2)`
`(Deltap)/(p) = (2DeltaQ)/(Q) = 2 ((0.5)/(2.1)) = (1.0)/(2.1) = 0.476 , (Deltap)/(p) xx 100% = 47.6% = 48% , R = 2Q`
`(DeltaR)/(R) = (DeltaQ)/(Q) rArr (0.5)/(2.1) = 0.238`
`(DeltaR)/(R) xx 100% = 24%`
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