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Answer:
2. chemical potential energy is converted into thermal energy, which is then transferred to the home's air to raise its temperature.
3. You pedaling the bike is transforming chemical energy, supplied by the breakdown of the food you eat, into mechanical energy to turn the pedals. The chemical energy is potential and the mechanical energy is kinetic.
4.We know that an electric fan as the name suggests runs with electricity and it functions due to mechanical energy i.e. its rotational motion. Thus, an electric fan converts an electrical energy into mechanical energy.
5.Mechanical energy means the sum of kinetic energy and potential energy. As you ride your bike the muscular(chemical) energy transforms/ converted mainly into mechanical energy.
Explanation:
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(note: plss... read the answer carefully, it doesn't mean that I bolded it its the correct answer, I may have given you some tips)