The source of photochemical smog is motor vehicle exhaust, NO and VOCs, reacting with sunlight. Effects of Acid Deposition. More commonly called acid rain, acid deposition alters chemistry in soil and âmobilizesâ toxic metal ions to the soil, harming soil organisms by hindering their nutrient uptake.
The human hair IS APRROX 0.004' (four thousands of an Inch and there are 12 inches to the foot)So therefore .004 divided by 12 is your answer.
To help compare different orders of magnitude, this page lists lengths between 10â4 m and 10â3 m (100 Âµm and 1 mm). 1  100 Âµm â 1/10 of a millimetre. 2  100 Âµm â 0.00394 inches. 3  100 Âµm â average diameter of a strand of human hair.  100 Âµm â thickness of a coat of 1  paint. 100 Âµm â length of a dust particle.