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physics

posted by on .

Normally the rate at which you expend energy
during a brisk walk is 3.6 Calories per minute.
(A Calorie is the common unit of food energy,
equal to 4184.1 J.)
How long do you have to walk to produce
the same amount of energy as a 100 W lightbulb that is lit for 8.4 hours?
Answer in units of h

  • physics - ,

    energy=100 joules/sec*8.4hrs*3600sec/hr

    time to walk=energyabove/4184*3.6 minutes

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