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The total number of alleles used in calculating allelic frequencies is equal to the total number of individuals (N), assuming a diploid species.

Two pieces of high-density polyethylene [G = 0.75 GPa] tubing are fitted together and firmly clamped at their ends. A torque of 7.7 N·m is applied to the fitting. Tube (1) is 155 mm long, and tube (2) is 105 mm long. Both tubes have an outsider diameter of 21.0 mm and an inside diameter of 16.0 mm. Determine the magnitude of the torque produced in tube (2).

Loads P = 872 N and Q = 357 N act on an oak beam. Determine the magnitude of the largest bending moment in the beam. Let a = 0.4 m and b = 1.4 m.

Loads P = 425 N and Q = 900 N act on an oak beam. Determine the magnitude of the largest shear force (consider both positive and negative values) in the beam. Let a = 0.6 m and b = 1.4 m.

Loads P = 816 N and Q = 366 N act on an oak beam. Determine the magnitude of the largest bending moment in the beam. Let a = 0.6 m and b = 1.2 m.

In the gear system shown, the motor applies a torque of 312 N-m to the gear at A. Shaft (1) is a solid 35-mm-diameter shaft, and shaft (2) is a solid 50-mm-diameter shaft. The bearings shown allow free rotation of the shafts. Determine the torque TE provided by the gear system at gear E.

The polar moment of inertia decreases as the diameter of a shaft decreases.

A compound steel [G = 80 GPa] shaft consists of solid 30-mm-diameter segments (1) and (3) and tube segment (2), which has an outside diameter of 52 mm and an inside diameter of 44 mm. Determine the maximum shear stress in tube segment (2).

Determine the magnitude of the moment MC for the cantilever beam, where P = 10 kips and M = 65 kip-ft.

A tubular steel [G = 80 GPa] shaft with an outside diameter of D = 90 mm and a wall thickness of t = 8 mm must not twist more than 0.05 rad in a 8-m length. Determine the maximum power that the shaft can transmit at 542 rpm.