1.

The energy of a system as a function of time t is given as E (t) = A^2 exp (- alpha t), where alpha = 0.2 s^(-1). The measurement of A has an error of 1.25%. If the error in the measurement of time is 1.50%, the percentage error is the value of E = (t) at t= 5 sec is

Answer»

0.01
0.02
0.03
0.04

Answer :D


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