1 (a) Assume that the lights in yourkitchen use 300 watts. How much energy and how much does it cost toleave the lights on 24 hours a day for a week if electricity is 8cents/kilowatt hour?

(b) For a month (assume 30days/month)?

(c) For a year?

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2 (a) How much energy and how muchmoney do you use to run your window air conditioner rated at 1500watts continuously for the month of July (assume 8¢/kWh)?

(b) If you assume that coal wasused to produce the electricity for your air conditioner, how muchcoal was burned to produce the electricity used?

(c) How much CO2 was produced bythe electricity used to run your air conditioner?

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3 (a) An average incandescent lightbulb has a life expectancy of 1,000 hours. How much energy would atypical 60 watt bulb use in a lifetime, assuming it lasts for 1,000hours?

(b) At 8¢/kWh, how much would itcost over its lifetime?

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4 (a) A compact fluorescent bulb uses15 watts and has a life expectancy of 10,000 hours. How much energyand how much would it cost to use a compact fluorescent for 10,000hours?

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5 (a) If your car gets 20 miles pergallon (MPG), and you drive an average of 10,000 miles each year,how many gallons of gas do you use a year?

(b) At $3.00 per gallon, how muchwill you spend on gasoline for the year?

(c) If the combustion of eachgallon of gasoline produces 22 lbs of CO2, how much CO2 does yourcar produce each year?

(d) If you traded your car in &bought one that got 25 MPG, how much gasoline would you save in oneyear?

(e) How much money would yousave?

(f) How much less CO2 would beemitted into the atmosphere from your improved car?