If an object is stretched beyond the elastic limit, it enters the _______ on an applied force versus elongation graph for a typical metal

A)

elastic region
B)

proportional region
C)

plastic region
D)

ultimate strength region
E)

breaking region


C

Physics & Space Science

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The torque due to the frictional resistance of the oil film between a rotating shaft and its bearing is found to be dependent on the force F normal to the shaft, the speed of rotation N of the shaft, the dynamic viscosity ? of the oil, and the shaft diameter D. Establish a correlation among the variables by using dimensional analysis.

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a. 1 b. 2 c. 3 d. 4

Physics & Space Science