What is the magnitude of the electric field

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Q. A circular arc has a uniform linear charge density of 5 nC/m. The value of the Coulomb constant is 8.98755 * 10^9 N*m^2/ C^2. What is the magnitude of the electric field at the center of the circle along which the arc lies?

Q. How many joules of kinetic energy does a 750- automobile traveling at a typical highway speed of 65 have?

By what factor would its kinetic energy decrease if the car traveled half as fast?

Reference no: EM1352883

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