A1.0 × 103-kilogram car travels at a constant speed of 20. meters per second around a horizontal circular track. the diameter of the track is 1.0 × 102 meters. the magnitude of the car’s centripetal acceleration is

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Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

The solid that is formed and usually sinks to the bottom of a solution is the