• funnystuff97@lemmy.world
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    1 year ago

    My math: Boiling a cup (0.24 kg) of water from 25°C to 70°C ~45kJ (0.24kg×45°C×4182J/kg°C) Raising 0.24 kg of water up a height 30,000 m ~ 71kJ (0.24kg × 9.8m/s^2 × 30,000 m)

    So my math says raising the temp of a cup of water from room temp would be equivalent to raising it about 19 km high.

    Edit: I’m a moron who can’t read, boiling water from 25 to 100 °C takes:

    0.24 kg × 75 °C × 4182 J/kg°C ~ 75kJ

      • funnystuff97@lemmy.world
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        1 year ago

        God I’m stupid. I misread what you wrote as raising water to 70°, not raising water by 70°, without even thinking that that’s not how you make tea. Fixed my math, and the numbers now check out.

      • HappycamperNZ@lemmy.world
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        1 year ago

        They could drink green tea, which seeps at around 70.

        Or that could be jasmine, its one of them.

    • mkwt@lemmy.world
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      1 year ago

      In the ISA atmosphere model, the tropopause starts at an altitude of 11 km. So you might be able to say that 19 km counts as ‘stratosphere’.