When placed 1.2 m apart the force each exerts on the other, Ask an Expert

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Q. Two nonconducting spheres have a total charge of 90 (mikro)C,. When placed 1.2 m apart, the force each exerts on the other is 12 N and is repulsive. What is the charge on each? What if the force were attractive?

Q. A car traveling at 31 m/s runs out of gas while traveling up a 8.0 degree slope. How far will it coast before starting to roll back down?

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