A cylindrical bar of metal having a diameter of 20.9 mm and a length of 195 mm is deformed elastically in tension with a force of 47600 N. Given that the elastic modulus and Poisson's ratio of the metal are 61.4 GPa and 0.33, respectively, determine the following:
(a) The amount by which this specimen will elongate in the direction of the applied stress.
(b) The change in diameter of the specimen. Indicate an increase in diameter with a positive number and a decrease with a negative number.
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