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Q. Two long, parallel wires, each having a mass per unit length of 40 g/m, are supported in a horizontal plane by strings 6.00cm long. When both wires carry the same current I, the wires repel each other so that the angle between the supporting strings is 16. Are the currents in the same direction or in opposite directions?

Q. How many radians does a 0.30m radius automobile tire rotate after starting from rest and accelerating at a constant angular acceleration of 2 rad/s2 over a 5.0 s interval?

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