Two wires,A and B,have the same initial length,but the radius of A is four times that of B,and the Young's modulus of A is a third that of B.If the same weight is attached to both wires,what is the ratio of the extension of A divided by the extension of B?
A)0.19
B)48
C)5.3
D)1.3
E)0.75

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The Answer of Two wires,A and B,have the same initial length,but the radius of A is four times that of B,and the Young's modulus of A is a third that of B.If the same weight is attached to both wires,what is the ratio of the extension of A divided by the extension of B?
A)0.19
B)48
C)5.3
D)1.3
E)0.75

Two Wires,A and B,have the Same Initial Length,but the Radius