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Q. Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the supporting strings is 16°.

Q. A novice skier, starting from rest, slides down the frictionless 29.0 degree incline whose vertical height is 155 meters. How fast is she going while she reaches the bottom?

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