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???
They're sealed, so what do you reckon?
No, the electrons move from one side to the other, you don't get more electrons.
no the electrons are negatively charged so the batteries get lighter
jimdubleyou - Member
No, the electrons move from one side to the other, you don't get more electrons.
Are you positive about that?
Yes, triple thier weight in Atoms, obvz.
Are you positive about that?
Yup, I'm a-no-dic.
(ba dom tish)
On a related subject:
[url= http://www.telegraph.co.uk/technology/internet/8865093/Internet-weighs-the-same-as-a-strawberry.html ]How much does the internet weigh?[/url]
johnners - MemberThey're sealed, so what do you reckon?
They're not totally sealed, there's a pipe on one end where the lightning comes out.
Without looking at the link I'm going to say the Internet weighs as much as a strawberry. Am I wrong 😀
So what comes out the vent hole on a car battery and why does it need topping up with water.
Back to the battery. E=mc^2 , so amount of energy stored divided by speed of light squared = extremely small amount of extra mass.
They do, but not measurably. Remember E=mc^2? You're increasing the energy stored in the cells, so mass must also increase. It'll be in the order of nanograms or picograms though.
What's perhaps more interesting is, charged batteries are less bouncy than flat ones. Why this is I don't know.
Einstein gave us the formula. E=MC2.
So as a battery loses energy as it powers your torch it gets lighter by a miniscule amount. E/C*C to be precise.
Edit: beaten by a mod. As were the rockers in Brighton.
Car batteries are traditionally lead-acid batteries:
https://en.wikipedia.org/wiki/Automotive_battery
...which generate hydrogen as one of the by-products of the chemical reaction. Hydrogen is very flammable, so a pressurised build-up of it isn't a good idea, so lots of batteries were vented. And needed topping up with water because water's a good source of hydrogen ions (and maybe also because small amounts of water vapour also escaped when vented).
jimdubleyou - Member
No, the electrons move from one side to the other, you don't get more electrons.
Are you positive about that?
You can definitely feel the difference in a man sized drill during the working day
Yes, for the same reason that springs get heavier when compressed.
If you hadn't pissed around so much in Mr Jackson's GCSE physics class, you'd have been able to take it at A level, and you'd have been able to answer your own question 🙂
it's the same principle as having to remove air from a shock before posting, it's lighter so costs less to post. even heavier if the air is warm as it's denser
I think batteries bounce higher when charged as the 'bits inside' line up in a more uniform fashion, making it bouncier.
A bit like an egg.
DrP
yes they do, but not by a measurable amount.
IIRC the internet weighs about the same as an orange.
[i]the internet weighs about the same as an orange. [/i]
Although there'th a lot more pith on the internet.
Some batteries (I'm thinking zinc/air here) actually get heavier as they discharge.
Rachel
when they get used in a torch, the light comes out - so they must get heavier then, right?
Do they get bigger as they fill up with power?
Some batteries (I'm thinking zinc/air here) actually get heavier as they discharge.
Yup!
when they get used in a torch, the light comes out - so they must get heavier then, right?
*applause*
when they get used in a torch, the light comes out - so they must get heavier then, right?
😀
What's perhaps more interesting is, charged batteries are less bouncy than flat ones. Why this is I don't know.
Interesting, maybe something to do with phase changes in the electrolyte.