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A copper wire, 2 m long and 6.25 x 10-5 m2 in cross section, is found to stretch 3 x 10-3 m under a tension of 1 x 103 N . What is the Young's modulus of the material of the wire?
9.195 x 1010 Nm2
9.195 x 105 Nm2
1.92 x 109 Nm2
1.06 x 1010 Nm2