power to run your car?
... at 60 mph, 78 kW!
If a car gets 30 miles per gallon, and travels
at 60 miles per hour, it burns two gallons of gasoline per hour.
To figure out how much power is involved, simply divide the heat content
of gasoline (2 gallons times 140 million
joules per gallon) by the time (1 hour = 3600 seconds).
By comparison, a clothes dryer draws about 5,000
The result is: 78,000 watts.