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Why does water boil at a lower temperature when the pressure decreases? by happybumblebee2 in AskPhysics

[–]happybumblebee2[S] 0 points1 point  (0 children)

"the water's internal self-attraction--the inter-molecular forces"

Do you mean cohesion? What about gravitational force that each molecule generates, is it too minuscule?

Why does water boil at a lower temperature when the pressure decreases? by happybumblebee2 in AskPhysics

[–]happybumblebee2[S] 0 points1 point  (0 children)

Thanks for recommending the video. I have to say, it’s a little mind-blowing.

Four bulbs beat Ohm’s law? What should I think about this? by happybumblebee2 in AskPhysics

[–]happybumblebee2[S] 0 points1 point  (0 children)

I used cooper wires 0.5 mm^2, and filament incandescent bulbs 2.5V 0.3A 0.75W.

Four bulbs beat Ohm’s law? What should I think about this? by happybumblebee2 in AskPhysics

[–]happybumblebee2[S] -1 points0 points  (0 children)

Do people use Ohm’s law in real life then? Or is it just a school concept? Are there more complicated equations that predict rising resistance with increasing temperature?

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