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1.4. The resistance of a doped germanium crystal obeys the equation
log R' = 4.697 – 3.917 log T.
(a) In a liquid helium cryostat, the resistance is measured to be 218 N. What is the
temperature?
(b) Make a log-log graph of R' against T from 200 to 30,000 N.
Th
nocictance of a nlatinum wire is found to be 11.000 at the ice point, 15.247 N at

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