-Use the Energy Conversions table to answer the following question: How many calories of energy (c) does a 60-watt lightbulb use in 1 hour?

Question

Quizplus · Accepted Answer

A 60-watt lightbulb uses 60 watts of power, which is equivalent to 60 joules per second. Over the course of 1 hour (3600 seconds), it uses 60 x 3600 = 216,000 joules. Since 1 calorie is approximately 4.184 joules, the energy in calories is 216,000 / 4.184 ≈ 51,660 calories.

-Use the Energy Conversions Table to Answer the Following Question