Comic Strips

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Comic Strips is a community for those who love comic stories.

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lawrence

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Cloak of Wisdom (lemmy.world)

submitted 2 years ago by lawrence to c/comicstrips

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[–] eating3645 9 points 2 years ago* (last edited 2 years ago) (1 children)

Hmmm let's see, you need roughly 2.39kcal or 10kJ of fuel a day.

Gasoline has an energy density of 45 MJ/kg.

https://energyeducation.ca/encyclopedia/Energy_density

Sciencing those together means you need 0.00022 kg or 0.22g of gasoline a day

Gasoline has a mass density of 0.7475 g/cm^3, more sciencing means you need 0.294 cm^3 of gasoline by volume.

https://www.engineeringtoolbox.com/fuels-densities-specific-volumes-d_166.html (average across range and convert to g/cm^3)

Here let's pull a number out of our butts, let's say a drop is a sphere with a diameter of 5mm, so the radius is 0.25cm. Volume is 4/3 pi r^3 which comes out to 0.065 cm^3/ drop.

0.294/0.065 gives 4.5 drops.

So you'd need 5 drops of gasoline to get your days worth of energy.

Seems we're off by a factor of a thousand. Most likely you doubled up on 1Calorie = 1000 calories. (Damnit food industry, what the hell?!?) 1kcal is already converted to the base calorie, as opposed to 1kCal.