Please Help... Given: A person walks about 3.6 calories/minute. How much energy is in a 40 Watt light bulb, that is lit for 5.6 hours? Answer: I think it is 144000 J/hr. I am not sure what to do with the 5.6 hours. I think it should be used to caluculate the total J which would be 806400. Question: I need to find the amount of time it takes to walk that equals the energy of the light bulb (in hours) using the calorie amount given. I have taken the total J (806400) and divided by the calorie/hr (I converted the 3.6 calorie/min to calorie/hour). Then I tried to solve for the total number of hours. I keep getting the wrong answer.