Asked by Jon
Toy ovens made for children often use incandescent light bulbs as a heat source. Incandescent light bulbs are relatively inefficient at generating light. Approximately 95% of the energy they use is emitted as heat instead of light: that's bad for the planet, but great for aspiring young bakers.
Assume that it takes 10,000 Joules of energy to raise 100 grams of cake batter from room temperature (23 ∘ C) to 90 ∘ C (fully cooked). How many seconds would it take for a 100-Watt light bulb to output this much energy? Note: 1 Watt = 1 Joule per second. Enter your answer in seconds but without including the unit.
Assume that it takes 10,000 Joules of energy to raise 100 grams of cake batter from room temperature (23 ∘ C) to 90 ∘ C (fully cooked). How many seconds would it take for a 100-Watt light bulb to output this much energy? Note: 1 Watt = 1 Joule per second. Enter your answer in seconds but without including the unit.
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