(a) When rebuilding her car's engine, a physics major must exert 105 N of force to insert a dry steel piston into a steel cylinder. What is the magnitude of the normal force in newtons between the piston and cylinder? N (b) What is the magnitude of the force in newtons she would have to exert if the steel parts were oiled? N

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.