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Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??

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electrodacus:

--- Quote from: gnuarm on July 03, 2022, 09:23:29 pm ---Just when you thought it was safe!

--- End quote ---

I do not understand your comment.
I designed wind turbines enough to be sure that equation is correct. My main hobby and job is energy generation and energy storage.
Wind is a stream of air molecules and the way energy is transferred is by collision with vehicle body thus the area in the equation.
That is why a vehicle traveling at wind speed in the exact same direction has access to zero wind power and when it gets above the air molecules will hit the vehicle from the opposite direction slowing it down.
But if you store energy as blackbird is doing while you are below wind speed then acceleration rate is lower as part of the energy is stored instead of using it to accelerate the vehicle then use that stored energy to accelerate the vehicle for above wind speed for a limited amount of time proportional with the amount of stored energy. In case of Blackbird stored energy is about 6Wh (half the energy in a battery smartphone) as that is what is needed to get to the speed in that documented test they done.   

PlainName:

--- Quote ---How is the voltage the same in both cases ?
You have 1A and 1V in the left side (duplicated) and you have 1A and 2V on the right side.
--- End quote ---

I think you don't understand ohm's law.

On the right there are two 1V batteries, and two 1R resistors - that is 1V across each resistor (as you can see from the simulation). So the top half of that circuit has the same voltage and current and resistance values as a single circuit from the left.

PlainName:

--- Quote ---You can replace the battery with a charged capacitor. Capacitors are not magic.
--- End quote ---

You clearly don't understand the difference between batteries and capacitors!

You cannot replace one with the other. You could replace the battery with a PSU (and perhaps the circuits should, but then you would argue about the invisible supply having some magic value, probably), but not with a capacitor.

PlainName:

--- Quote from: electrodacus on July 03, 2022, 09:12:08 pm ---
--- Quote from: dunkemhigh on July 03, 2022, 08:57:16 pm ---
--- Quote ---The equation shows that ...
--- End quote ---

Has it never occurred to you that you might be either using the wrong equation, or the right one in the wrong situation?

--- End quote ---

It is the correct equation for that situation.  The situation is a wind only powered vehicle driving directly downwind.

--- End quote ---

That's assuming a sail or similar, isn't it?

electrodacus:

--- Quote from: dunkemhigh on July 03, 2022, 10:19:40 pm ---
--- Quote ---How is the voltage the same in both cases ?
You have 1A and 1V in the left side (duplicated) and you have 1A and 2V on the right side.
--- End quote ---

I think you don't understand ohm's law.

On the right there are two 1V batteries, and two 1R resistors - that is 1V across each resistor (as you can see from the simulation). So the top half of that circuit has the same voltage and current and resistance values as a single circuit from the left.

--- End quote ---

What is the difference between two 1V batteries in series and a single 2V battery? Also what is the difference between two 1 Ohm resistors in series and a single 2Ohm resistor ?
You have two completely separate loops with 1V battery and 1Ohm resistor on the left and a single loop that you can simplify as a 2V battery and a 2 Ohm resistor.

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