Final answer:
The thickness of the paint when expressed in meters is 0.0001m.
Step-by-step explanation:
To convert the thickness of the paint from nanometers to meters, we can use the conversion factor provided: 1m/1x10-9nm. By multiplying the initial measurement of 100nm by the conversion factor, we can find the thickness in meters:
100nm x (1m/1x10-9nm) = 0.0001m
Therefore, the thickness of the paint when expressed in meters is 0.0001m.