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who ever answers gets ! show work and it's due !

Find the magnitude of the torque about p if an f = 80-lb force is applied as shown. (round your answer to the nearest whole number.) ft-lb

Sketch one cycle if the cosine function y=2cos2theta

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8