10−2 m10^{-2} \mathrm{~m}10−2 m
0.1 m0.1 \mathrm{~m}0.1 m
5×10−4 m5 \times 10^{-4} \mathrm{~m}5×10−4 m
5×10−2 m5 \times 10^{-2} \mathrm{~m}5×10−2 m
