(a) If you follow a diet of 2190 food calories per day (2190 kilocalories), what
ID: 1321415 • Letter: #
Question
(a) If you follow a diet of 2190 food calories per day (2190 kilocalories), what is your average power consumption in watts? (A food or large calorie is a unit of energy equal to 4.2 x 103 J; a regular or small calorie is equal to 4.2 J.) Note for comparison that the power consumption in a table lamp is typically about 100 watts. (b) How many days of a diet of 2190 large calories are equivalent to the gravitational energy change from sea level to the top of Mount Everest, 8848 m above sea level? Assume your mass is 51 kg. (The body is not anywhere near 100% efficient in converting chemical energy into change in altitude. Also note that this is in addition to your basal metabolism.)Explanation / Answer
a ) Energy =2190 KCal =2190 * 4200 J
P=2190 * 4200/24*3600 = 106.45 W (ans)
b)Days of diet if 2190 Kcal/day
Energy required = 51*g*8848 = 4422230.4 J
No. of days = 0.48 days (ans)
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