Two wires are made of the same material and have the same volume. However wire 1 has cross-sectional area A and wire 2 has cross

Two wires are made of the same material and have the same volume. However wire 1 has cross-sectional area A and wire 2 has cross-sectional area 3A. If the length of wire 1 increases by `Deltax` on applying force F, how much force is needed to stretch wire 2 by the same amount?
A. F
B. 4F
C. 6F
D. 9F

Two wires are made of the same material and have the same volume. However wire 1 has cross-sectional area A and wire 2 has cross-sectional area 3A. If

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