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Q1. A box weighing 300N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.2° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.540, how long does it take to move the box 4.00 m, starting from rest.

Q2. A 200kg sculpture is attached to the wall by 4 identical bolts inserted into horizontally-drilled holes in the wall. If each bolt has the circular cross-sectional area of 5.50×10-5 m2, what is the shear stress on the bolts?

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