A racing car travels with a constant tangential speed of 75, Ask an Expert

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Q. A racing car travels with a constant tangential speed of 75 m/s around a circular track with a radius 625 m. Find (a) the magnitude of the car's total acceleration and (b) the direction of its total acceleration relative to the radial direction.

Q. A long solenoid that has 1 020 turns uniformly distributed over a length of 0.38 m produces a magnetic field of magnitude 1 x10-4 T at its center. What current is required in the windings for that to occur?

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