Réponse:
Bonjour
Explications étape par étape:
[tex]rh = 0.000015nm = 0.0000015 \times {10}^{ - 9} m \\ = 1.5 \times {10 }^{ - 6} \times {10}^{ - 9} \\ = 1.5 \times {10}^{ - 15} m[/tex]
[tex]dts = 150 \: gm \: = 150 \times {10}^{9} m \\ = 1.5 \times {10}^{2} \times {10}^{9} \\ 1.5 \times {10}^{11} m[/tex]
[tex]dc = 60 \: um = 60 \times {10}^{ - 6} m \\ = 6 \times 10 \times {10}^{ - 6} \\ = 6 \times {10}^{ - 5} m[/tex]
