Determine the number of atoms across the diameter of a human hair given that the diameter of an atom is 0.1 nm and the diameter of a human hair is 0.1 mm. A) 10^-¹² B) 10¹² C) 10³ D) 10⁶ E) 10⁹

Question

Quizplus · Accepted Answer

- The diameter of a human hair is 0.1 mm = 0.1 x 10⁶ nm (conversion from mm to nm) - The diameter of an atom is 0.1 nm - To determine the number of atoms across the diameter of a human hair, we divide the diameter of the hair by the diameter of an atom: 0.1 x 10⁶ nm / 0.1 nm = 10⁷ atoms - This means there are 10 million atoms across the diameter of a human hair, which can be represented as 10⁶. Therefore, the correct answer is D.

Determine the Number of Atoms Across the Diameter of a Human