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A small speck of carbon the size of a pinhead contains about 4×10^{19} atoms, the diameter of a carbon atom is 1.5 10^{-10} m, and the circumference of the earth at the equator is 40,075 km.

How many times around the earth would the atoms from this speck of carbon extend if they were laid side by side?

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Our tutors have indicated that to solve this problem you will need to apply the Dimensional Analysis concept. You can view video lessons to learn Dimensional Analysis. Or if you need more Dimensional Analysis practice, you can also practice Dimensional Analysis practice problems.