QQuestionMathematics
QuestionMathematics
Paper thickness varies. Typically, 100 sheets are about 1 cm thick. Atoms typically vary from 1 to 3 angstroms in radius. (An angstrom is 10
−10
m.) Suppose a piece of paper is 0.0072 cm thick. How many atoms span the thickness if the radius of the atom is 1.23 angstroms?
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Answer
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Step 1Let's solve this problem step by step:
Step 2: Convert the paper thickness to meters
0.0072 \mathrm{~cm} = 7.2 \times 10^{-4} \mathrm{~m}
Final Answer
Approximately 2,930,000 atoms span the thickness of the paper.
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