A load-bearing alloy cable in an engineering truss has a cross-sectional area of 4.8 × 10-6 m2 and is subjected to a tensile force of 820 N. The resulting strain measured in the cable is 0.13%.
Which value of the Young modulus of the alloy, in Pa\text{Pa}Pa, is correct and expressed to an appropriate number of significant figures?
1.3×1091.3 \times 10^91.3×109
1.31×1091.31 \times 10^91.31×109
1.3×10111.3 \times 10^{11}1.3×1011
1.31×10111.31 \times 10^{11}1.31×1011
