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The adjacent graph shows the extension left parenthesis Δl right parenthesis of a wire of length I m suspended from the top of a roof at one end with the load W connected to the other end. If the cross sectional area of the wire is 10 minus to the power of 6 end exponent m to the power of 2 end exponent, calculate the young's modulus of the material of the wire.

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  1. 2 cross times 10 to the power of 11 Nm squared    
  2. 2 cross times 10 to the power of negative 11 end exponent Nm squared    
  3. 3 cross times 10 to the power of negative 12 end exponent Nm squared    
  4. 2 cross times 10 to the power of negative 13 end exponent Nm squared

    Answer:The correct answer is: 2 cross times 10 to the power of 11 Nm squared

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