A brass pipe is twisted by torques T 5 800 N?m acting at the ends causing an angle of twist of 3.58. The pipe has the following properties: L 5 2.1 m, d1 5 38 mm, and d2 5 56 mm. The shear modulus of elasticity G of the pipe is approximately:
(A) 36.1 GPa
(B) 37.3 GPa
(C) 38.7 GPa
(D) 40.6 GPa
(A) 36.1 GPa
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