A smal solar cell has 1.000 kilojoules of light energy strike it. The solar cell transforms the light energy to electric energy,
which is then sent to a small fan. The fan transforms the electric energy into kinetic energy
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BILD 100
solar cell
fan
In the example above, imagine that the sunlight, solar cell, and fan form a closed system and no heat is generated. In this
Situation after 1.000 kilojoules of light energy enter the system,
kilojoules of electric energy are transformed into
kilojoules of kinetic energy
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