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When the fan is plugged in it starts moving, which changes electical energy into KE.
The computer turns electrical energy into light and sometimes sound energy. It also gives thermal energy while it's working.
The heat lamp turns electrical energy into thermal and light energy when it is plugged in.
The intercom turns electrical energy into sound energy.
The sun gives off electromagnetic energy, which is converted into chemical energy by plants through photosynthesis. Without energy anything living cannot survive.
The calculator takes light energy and turns it into electrical energy, to power the calculator.
The heater turns electrical energy into thermal energy.
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