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Which of the following statements is FALSE when concerning the hot working of metal?

(A) Produce a fine grained product

(B) Removes strain hardening

(C) Combines of annealing and cold working

(D) Decreases the density of the metal

The Correct Answer
Explanation

Find the slope of the line defined by: $latex y=2x^5 + 3x^4 + 2x^2 + 3x + 1$

(A)$latex m = 2x^6 + 3x^4 + 2x^3 + 3$ (B) $latex m = 10x + 12x^2 + 4x^4 + 3$ (C) $latex m = 10x^5 + 12x^4 + 4x^2 + 3$ (D) $latex m = 10x^4 + 12x^3 + 4x + 3$

Correct Answer: D

The magnitude(N) of the resultant of the three coplanar forces, A, B, and C, is most nearly:

(A) 7.0 (B) 7.8 (C) 9.2 (D) 10.3

Correct Answer: A

A tube that is 10 feet long and 2 feet in diameter is placed in an air stream. The flow of the air is at a speed of 15 ft/s and is perpendicular to the long axis of the tube. If the coefficient of drag is 1.3 and the density of air is 0.075 lbm/ft3 What is the drag on the cylinder?

(A) 150 lbf (B) 200 lbf (C) 320 lbf (D) 220 lbf

Correct Answer: D

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