1.92×10−15 N1.92 \times 10^{-15} \mathrm{~N}1.92×10−15 N
7.4×10−12 N7.4 \times 10^{-12} \mathrm{~N}7.4×10−12 N
7.4×10−16 N7.4 \times 10^{-16} \mathrm{~N}7.4×10−16 N
0N0N0N