5. Human beings at rest radiate heat at a rate of about 100 watts (W). Approxima

Question

5. Human beings at rest radiate heat at a rate of about 100 watts (W). Approximately how many kilocalories per day can a sedentary person eat (and fully digest) without gaining weight? 14 pts] 6. The following quote is from the back of a bottle of Seventh Generation Natural Dish Liquid "If dishwashing liquid with our 25 oz vegetable-based product, we could save 81,000 barrels of oil, enough to heat and cool 4,600 U.S. homes for a year!" every household in the U.S. replaced just one bottle of 25 oz. petroleum-based According to the information in this statement... a) How many barrels of oil does a single U.S. household use each year for heating b) Convert your answer in part a to liters, assuming one barrel is equal to 42 gallons. c) What is the underlying number of U.S. households assumed by the above and cooling? [2 pts] 12 pts statement? (Tip: You may assume that a bottle of petroleum-based dishwashing liquid is 10% petroleum by volume). Do you think this is a plausible estimate of the number of households in the U.S.2 Please explain. [3 pts] 7. Please read the 2015 Science article by Steffen et al.. "Planetary boundaries: Guidina human development on a changing planet" (this article may be found in the thon rafer to Tgble 1 to answer the

Explanation / Answer

multiple questions posted.please post each question seperately

5)

1 watt =1 Joule/second

=>100 watt =100 Joules/second

=>100 watt =100 *((1/4.184)*(1/1000))*(60*60*24) (Joule/second)*(Kcal/Joule)*(second/day)

=>100 watt =2065 Kcal/day

sedentary person can eat approximately 2065 Kilocalories per daywithout gaining weight

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6)

(a)

amount of oil single US household use each year for heating and cooling = 81000/4600

amount of oil single US household use each year for heating and cooling =17.61 barrels approximately

(b)

1gallon=3.78541 liters

amount of oil single US household use each year for heating and cooling = (81000/4600)*42*3.78541

amount of oil single US household use each year for heating and cooling =2800 liters approximately

(c)

i cant understand this part

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