Physics for Scientists and Engineers, Vol. 1
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 3P

(a)

To determine

The name of two metals from Table 38-2.

(b)

To determine

The value of contact potential.

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For a K*- CF ion pair, attractive and repulsive energies E, and ER, respectively, depend on the distance between the ions r, according to 1.436 E4 -- 5.8 x 10-6 ER = For these expressions, energies are expressed in electron volts per K*- Cl- pair, and r is the distance in nanometers. a) If the net energy EN is just the sum of the two expressions above: EN = E+ ER, Find the values of r, and E,? b) If curves of E,, ER and EN are plotted in given figure, compare E, the calculated values of ro and E, with that from the graph. -0.28 nm E,-4.6 eV 0.00 0 10 0.20 0.30 0.40 0.50 060 0.70 0.80 00 1.00
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