2.9×10−4 m2.9\times 10^{-4}\mathrm{~m}2.9×10−4 m
2.4×10−8 m2.4\times 10^{-8}\mathrm{~m}2.4×10−8 m
2.9×10−10 m2.9\times 10^{-10}\mathrm{~m}2.9×10−10 m
2.4×10−39 m2.4\times 10^{-39}\mathrm{~m}2.4×10−39 m
