4.5×10−17 J4.5 \times 10^{-17} \mathrm{~J}4.5×10−17 J
4.5×10−8 J4.5 \times 10^{-8} \mathrm{~J}4.5×10−8 J
4.5×1017 J4.5 \times 10^{17} \mathrm{~J}4.5×1017 J
4.5×108 J4.5 \times 10^{8} \mathrm{~J}4.5×108 J
4.5×10−9 J4.5 \times 10^{-9} \mathrm{~J}4.5×10−9 J
