3×1010 N/m23 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2}3×1010 N/m2
3.5×110 N/m23.5 \times 1^{10} \mathrm{~N} / \mathrm{m}^{2}3.5×110 N/m2
4×1010 N/m24 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2}4×1010 N/m2
5×1010 N/m25 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2}5×1010 N/m2