Energy Transfer and Transformation: Tutorial
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Part A
The picture shows a roller coaster track with two hills of equal height. A motor uses electric energy to pull the roller
coaster cars by a chain to the top of the first hill. While the cars are moving up the hill, what energy transformations
occur? When the cars get to the top of the first hill, has any energy entered the roller coaster system? If so, what kind?
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Energy does not disappear, the energy is transformed from one form into another form. When a car stereo is turned on, the car radio converts radio waves to electrical energy, next the electrical energy in transformed in sound. It means when someone turn on a radio we have electrical energy, which is transformed into electrical energy and then into energy acoustic.

The complete sequence of energy is:

First transmission sound energy is converted into mechanical energy then electrical energy in the microphone, next into radio waves that is electromagnetic energy. The aerials convert electromagnetic energy in electrical energy and next in magnetic and mechanical energy and finally in sound energy.

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Explanation: