Given that the diameter of a human hair [tex] = 9 \times 10^{-5} [/tex]
Given that the diameter of a spider's silk [tex] = 3 \times 10^{-6} [/tex]
Now we have to find how much greater is the diameter of a human hair than the diameter of a spider's silk.
To find that we just need to subtract the given numbers.
[tex] 9 \times 10^{-5} - 3 \times 10^{-6} [/tex]
Since powers are not same so let's make them equal
[tex] = 90 \times 10^{-6} - 3 \times 10^{-6} [/tex]
now we can easily subtract the coefficients that is 3 from 9
[tex] = (90-3) \times 10^{-6} [/tex]
[tex] = 87 \times 10^{-6} [/tex]
[tex] = 8.7 \times 10^{-5} [/tex]
Hence final answer is [tex] 8.7 \times 10^{-5} [/tex].
