Question 1036265
Hi there,
1 micron = 1 x 10^-6
1 nanometre = 1 x 10^-9
So, 50 x 10^-6/10 x 10^-9
= 5,000.
This the number of 10 nanometer
particles that could be stacked
across the diameter(50 x 10^-6)
of a human hair.
Hope this helps :-)