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A block with mass 0.382 kg is attached to a horizontal spring with spring constant k...

A block with mass 0.382 kg is attached to a horizontal spring with spring constant k = 1.28 N/m on a frictionless surface. The block is pulled 0.753 m from equilibrium and released. (a) What is the amplitude of the block's motion? (b) What is its period? (c) How long after release does the block take to first return to its equilibrium position? (d) What is its speed at that position? {b. 3.43 s, d. 1.38 m/s}

a) A=0.753m

b) 3.43s

C)???

d)???

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