1. How many cubic feet of natural gas contains the same potential energy as 2.8 imperial gallons of heating oil? 2. My TV is used 1 hour per day, 3 days per week. It consumes 25 W when on, and 3 W when off (standby power). How much electricity does it consume in one year? 3. How much electricity is consumed in 5 hours (in watt-hours) by a cell phone charger that is rated as using 1.8 A?

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1. How many cubic feet of natural gas
contains the same potential energy as 2.8
imperial gallons of heating oil?
2. My TV is used 1 hour per day, 3 days per
week. It consumes 25 W when on, and 3 W
when off (standby power). How much
electricity does it consume in one year?
3. How much electricity is consumed in 5
hours (in watt-hours) by a cell phone charger
that is rated as using 1.8 A?
Transcribed Image Text:1. How many cubic feet of natural gas contains the same potential energy as 2.8 imperial gallons of heating oil? 2. My TV is used 1 hour per day, 3 days per week. It consumes 25 W when on, and 3 W when off (standby power). How much electricity does it consume in one year? 3. How much electricity is consumed in 5 hours (in watt-hours) by a cell phone charger that is rated as using 1.8 A?
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