ch01_p23 - 23. We introduce the notion of density, = m / V...

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23. We introduce the notion of density, / mV ρ = , and convert to SI units: 1000 g = 1 kg, and 100 cm = 1 m. (a) The density of a sample of iron is therefore () 3 3 1kg 100 cm 7.87 g cm 1000 g 1 m §· § · = ¨¸ ¨ ¸ ©¹ © ¹ which yields = 7870 kg/m 3 . If we ignore the empty spaces between the close-packed spheres, then the density of an individual iron atom will be the same as the density of any iron sample. That is, if M is the mass and V is the volume of an atom, then
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This note was uploaded on 09/09/2008 for the course PHYS 100 taught by Professor Shylnov during the Spring '08 term at Illinois Tech.

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