a scientist measures the diameter of two very thin wires to be used in an electrical experiment. the diameter of the first wire is 1.24*10^-3 mm. the diameter of the second wire is 9.1*10^-4 mm. how much wider is the first wire than the second one?
1.24 x 10^-3 = .00124
And
9.1 x 10^-4 = .00091
So, we just subtract like we normally would....
.00124
- .00091
----------
.00033mm
And that's it !!!