Suppose you bring 100 pounds of groceries into your home each week. Please estim

Question

Suppose you bring 100 pounds of groceries into your home each week. Please estimate how many pounds of each type of waste leaves your home. Does this add up to 100 pounds? Where do the various forms end up? If you use 1000 kilowatt-hours of electricity in a month, what is the equivalent energy measured in gallons of gasoline? You can use the following website calculator to help you convert units. How far could you drive a car in month with the same energy? http://www.onlincconvcrsion.com/energy.htm If you install a low flow (1.1 gallon/min) showerhead instead of a regular (2.6 gallon/min) showerhead, how much water would you save for a 10-minute shower?

Explanation / Answer

b) 1 kilowatt hour = 0.027 322 404 372 gallon [U.S.] of automotive gasoline

average speed in US = 25 miles/gallon

Distance travelled by car = 0.027322404372 * 100 * 25 = 68.306 miles

c) Water Saved = (Old flow - New flow) * Time taken

=> (2.6 gallon/min - 1.1 gallon/min) * 10 min

=> 1.5 gallon/min * 10 min

=> 15 gallons = 56.7815L

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