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So my wife is taking an Urban Ecology class and we've run into a problem that the answer seems crazy to. It is pretty simple math but the answer is astronomical. Hoping someone on can check our work or at least help us out..

The question states:

Our math is this:

1kWh = 3600kJ

2.4kWh x 3600kJ = 8,640kJ/day

8,640kJ/.02kJ/kg = 432,000kg/day

Does any of this make sense? Is the formula correct? That seems like a ton of wood to run the human body.

Thanks in advance if anyone understands this stuff. It's over my pay grade

The question states:

**How much wood do you need to burn to run the human body at 100w or 2.4kWh per day given the energy density of wood is 0.02kJ/kg?**

Our math is this:

1kWh = 3600kJ

2.4kWh x 3600kJ = 8,640kJ/day

8,640kJ/.02kJ/kg = 432,000kg/day

Does any of this make sense? Is the formula correct? That seems like a ton of wood to run the human body.

Thanks in advance if anyone understands this stuff. It's over my pay grade