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.

Question

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.

Answer 1

100 sec right?

Answer 2

I agree