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Sreeshan · 2024-04-23T07:12:25.294Z

Stores of energy • We get energy from the food we eat. • Our muscles turn chemical energy into kinetic energy. • Our brain converts electrical energy into chemical energy. • Our stomach turns the energy in our food into thermal energy to keep our body warm. Energy transfer in Daily life • We have heaters that convert electrical energy into thermal energy to heat water. • When combustion occurs in engines, mechanical energy is converted to mechanical energy, making the wheels rotate. "Wasted energy" • The energy transfer that happens always has flaws, it has a percentage of wasted energy. The transformation of chemical to mechanical in engines is not fully efficient and has flaws, such as that some of the mechanical energy is turned into heat due to friction. Conservation of energy • The basic law that states, energy cannot be created nor destroyed. Energy was there from the beginning, and since then we have only been using that energy, if said, then the amount of energy in the universe from the beginning and now is the same. But the problem with energy is that we often waste energy as some of it turns into heat energy. Sankey diagram Sankey diagram: We often use this diagram to represent the change of state of energy

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Sreeshan

Apr 23

Energy transfer

in Sreeshan

Stores of energy

We get energy from the food we eat.
Our muscles turn chemical energy into kinetic energy.
Our brain converts electrical energy into chemical energy.
Our stomach turns the energy in our food into thermal energy to keep our body warm.

Energy transfer in Daily life

Conservation of energy

Sankey diagram

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