Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Chapter 38, Problem 10P
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(a) Using the periodic table provided, write down the shorthand electron notation for the following three
elements and indicate whether they are active, inactive or intermediate:
Scandium (Sc):
Argon (Ar); Aluminium (Al)
(b) Metals are conductors of electricity whereas insulators such as ceramic materials are not. Using the
honding theory, show and explain why metals are conductors and ceramics are insulators.
(c) Aluminium is a good conductor of electricity. A 100 m aluminium wire of diameter 2.25 mm is to be
used in domestic electrical wiring. If a voltage of 250V and a current of 13 amps are needed,
answer the following
i.
What is the conductivity of the aluminium wire?
ii.
Give two reasons why aluminium wire is not used in domestic wiring in Zambia?
ii.
Give three applications of pure aluminium.
Problem 1
Silicon has three naturally-occurring isotopes: 92.23% of 28Si, with an atomic weight of
27.9769 amu, 4.68% of 29Si, with an atomic weight of 28.9765 amu, and 3.09% of 30Si,
with an atomic weight of 29.9738 amu. On the basis of these data, confirm that the average
atomic weight of Si is 28.0854 amu.
4) Molybdenum has a BCC crystal structures, the density of molybdenum is 10.22 g/cm³ and its
atomic mass is 95.94 g/mol. What are the atomic concentration, the lattice parameter a and the
atomic radius of molybdenum. What is the atomic concentration in the primitive cell?
5) Tungsten (W) has the BCC crystal structure. The radius of the W atom is 0.1371 nm. The atomic
mass of W is 183.8 amu (g/mol). Calculate the number of W atoms per unit volume and the density
of W (NA = 6.02 x 10²3).
Chapter 38 Solutions
Physics for Scientists and Engineers, Vol. 1
Ch. 38 - Prob. 1PCh. 38 - Prob. 2PCh. 38 - Prob. 3PCh. 38 - Prob. 4PCh. 38 - Prob. 5PCh. 38 - Prob. 6PCh. 38 - Prob. 7PCh. 38 - Prob. 8PCh. 38 - Prob. 9PCh. 38 - Prob. 10P
Ch. 38 - Prob. 11PCh. 38 - Prob. 12PCh. 38 - Prob. 13PCh. 38 - Prob. 14PCh. 38 - Prob. 15PCh. 38 - Prob. 16PCh. 38 - Prob. 17PCh. 38 - Prob. 18PCh. 38 - Prob. 19PCh. 38 - Prob. 20PCh. 38 - Prob. 21PCh. 38 - Prob. 22PCh. 38 - Prob. 23PCh. 38 - Prob. 24PCh. 38 - Prob. 25PCh. 38 - Prob. 26PCh. 38 - Prob. 27PCh. 38 - Prob. 28PCh. 38 - Prob. 29PCh. 38 - Prob. 30PCh. 38 - Prob. 31PCh. 38 - Prob. 32PCh. 38 - Prob. 33PCh. 38 - Prob. 34PCh. 38 - Prob. 35PCh. 38 - Prob. 36PCh. 38 - Prob. 37PCh. 38 - Prob. 38PCh. 38 - Prob. 39PCh. 38 - Prob. 40PCh. 38 - Prob. 41PCh. 38 - Prob. 42PCh. 38 - Prob. 43PCh. 38 - Prob. 44PCh. 38 - Prob. 45PCh. 38 - Prob. 46PCh. 38 - Prob. 47PCh. 38 - Prob. 48PCh. 38 - Prob. 49PCh. 38 - Prob. 50PCh. 38 - Prob. 51PCh. 38 - Prob. 52PCh. 38 - Prob. 53PCh. 38 - Prob. 54PCh. 38 - Prob. 55PCh. 38 - Prob. 56PCh. 38 - Prob. 57PCh. 38 - Prob. 58PCh. 38 - Prob. 59PCh. 38 - Prob. 60PCh. 38 - Prob. 61PCh. 38 - Prob. 62PCh. 38 - Prob. 63PCh. 38 - Prob. 64PCh. 38 - Prob. 65PCh. 38 - Prob. 66PCh. 38 - Prob. 67PCh. 38 - Prob. 68PCh. 38 - Prob. 69PCh. 38 - Prob. 70PCh. 38 - Prob. 71PCh. 38 - Prob. 72PCh. 38 - Prob. 73PCh. 38 - Prob. 74PCh. 38 - Prob. 75PCh. 38 - Prob. 76P
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