Watts Hair
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your hair dryer has a power rating of 1200 watts.?
B If the hair dryer is used for 20 mins per day, how many kilowatts-hours per day is this? ( convert 20 mins to hours)
C: find the kilowatts-hours under by that hair dryer each month (assume 30 days/month)
D: If your town charges $0.15/kWh, what is the cost to use the hair dryer per month?
B.
Energy/day = 1.2 kw * (1/3)h = 0.4 kwh / day
C.
Energy/month = 0.4kwh/day * 30 day/month = 12kwh / month
D.
Cost/month = 12kwh / month * 0.15 $ / kwh = $1.8
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