To bake cookies in the oven using solar panels, the following energy transformations occur:
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Solar Energy to Electrical Energy: The solar panels convert sunlight (solar energy) into electrical energy.
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Electrical Energy to Thermal Energy: The electrical energy is then used to power the electric oven. In the oven, electrical energy is transformed into thermal energy (heat), which cooks the cookies.
So, the overall energy transformations are: Solar Energy → Electrical Energy → Thermal Energy.