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Chapter 1: Problem 27
One m/s is how many km/h?
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Write \(1 / x\) as \(x\) to some power.
The human body contains about \(10^{14}\) cells, and the diameter of a typical cell is about \(10 \mu \mathrm{m}\) Like all ordinary matter, cells are made of atoms; a typical atomic diameter is \(0.1 \mathrm{nm}\). How does the number of atoms in a cell compare with the number of cells in the body? a. greater b. smaller c. about the same
The human body contains about \(10^{14}\) cells, and the diameter of a typical cell is about \(10 \mu \mathrm{m}\) Like all ordinary matter, cells are made of atoms; a typical atomic diameter is \(0.1 \mathrm{nm}\). The volume of a cell is about \(10^{-10} \mathrm{m}^{3}\) b. \(10^{-15} \mathrm{m}^{3}\) c. \(10^{-20} \mathrm{m}^{3}\) d. \(10^{-30} \mathrm{m}^{3}\)
A year is very nearly \(\pi \times 10^{7}\) s. By what percentage is this figure in error?
Use the definition of the meter to determine how far light travels in 1 ns.
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