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20. To organize the calculation, we introduce the notion of density:
ρ
=
m
V
.
(a) We take the volume of the leaf to be its area
A
multiplied by its thickness
z
. With
density
= 19.32 g/cm
3
and mass
m
= 27.63 g, the volume of the leaf is found to be
V
m
==
1430
..
cm
3
We convert the volume to SI units:
()
3
36
3
1m
1.430 cm
1.430
10
m .
100 cm
V
−
§·
×
¨¸
©¹
Since
V
=
Az
with
z
= 1
×
10
6
m (metric prefixes can be found in Table 1–2), we obtain
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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.
 Spring '08
 shylnov
 Physics, Mass

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