A 56 kg woman cheats on her diet andeats a 590 Calorie (540 kcal)jellydonut for breakfast.
(a) How many joules of energy are theequivalentof one jelly doughnut?
1
Your response is within 10% of the correctvalue. This may be due toroundoff error, or you could have amistake in your calculation.Carry out all intermediate results toat least four-digit accuracyto minimize roundoff error.J
(b) How many stairs must the woman climb to perform an amountofmechanical work equivalent to the food energy in onejellydoughnut? Assume the height of a single stair is 15 cm.
2stairs
(c) If the human body is only 28%efficient in converting chemicalenergy to mechanical energy, howmany stairs must the woman climb towork off her breakfast?
3 stairs