Which of the following metals is most likely to recrystallize during hot-working?
(a) Aluminum
(b) ?-Iron
(c) Cartridge brass
(d) Zirconium
(c) Cartridge brass
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If the magnitude of the velocity of an object increases, we may be sure that during the time of this increase,
a. the object is accelerated. b. the acceleration of the object increases. c. the object is moving in a straight path. d. the object is changing direction. e. none of these
A sticky hockey puck slides along a frictionless, horizontal ice surface at 75 m/s in the +x direction. It collides with a second sticky puck originally sliding at 25 m/s in the -y direction. They collide totally inelastically. If the first puck has a mass equal to twice that of the second, what is the angle of their final velocity vector below the +x direction?
A. 37 degrees B. 9.5 degrees C. 49 degrees D. 42 degrees E. 34 degrees
The resistance of a wire does not change when its temperature changes
Indicate whether the statement is true or false
Three 1.0 
C charges are placed along the x-axis, one charge at x = -10 cm, another at the origin, and the last one at x = 10 cm. What is the total potential energy of this arrangement?
A. 0.27 J B. -0.27 J C. 0.72 J D. 0.23 J E. infinite (or indeterminate)