If heat is added to the system = W is positive If system loses heat = W is negative If work is done on system (as in compression) = W is negative If the system does work (as in expansion) = W is positive
ambulalsa aravatagi You can use either formula. If you use Q +W then W means work done on the gas. If you use Q-W then W means the work done by the gas.
The one the negative sign is normally used in physics as it bases on the system's surrounding while the one with the positive sign is used chemistry as it's based on the system precisely...besides I think you just need to understand when and how to use the +,- sign in the question...Good luck buddy.
A very big tank made of steel evacuated and it's collapsed. However steel strength is much more than atmospheric pressure Please explain this phenomenon with actual equation ?? Please Also an aneroid barometer workdone in joules with actual data Please show actual data ? We can produced how many joules with help of atmospheric pressure volume changing per unit volume ???? So we energized whole universe ?🙏🙏🙏🙏🙏🙏 Energy problems solved on every planet with very simple ideas that we concentrated radiation to the point and we achieved fusion from radiation by concentration of small energy to the point so energy density become equal to fusion reactor Once this happens and energy become available everywhere Please do the proper math over it
so easy to understand pls can make more topic about thermodynamics and also fluid flow. ^_^
isn't there supposed to be a minus alongside the work?
If heat is added to the system = W is positive
If system loses heat = W is negative
If work is done on system (as in compression) = W is negative
If the system does work (as in expansion) = W is positive
He is wrong and he doesn't know
awesome video helped me a lot because I got confused on work done sign convention but now I think I can solve it
so useful and easy to understand
what a great video....osum sir
In the beginning the work done on the gas is negative .
how so?
The work is neg. because the sys. dont give energy.
isn't it supposed to be positive though? because the work is done on the system (the gas, in the first problem)
Pls be careful with the sign. The work is negative because system dont give energy
great lecture
Thank you sir 😊
It was easy to understand.
This is the guy from Khan Academy. He's good.
This is very helpful!!
Most grateful
sir... deltaU = Q -W right???
u have done it as Q+W
which one is right?????????????
please answer...
ambulalsa aravatagi You can use either formula. If you use Q +W then W means work done on the gas. If you use Q-W then W means the work done by the gas.
The one the negative sign is normally used in physics as it bases on the system's surrounding while the one with the positive sign is used chemistry as it's based on the system precisely...besides I think you just need to understand when and how to use the +,- sign in the question...Good luck buddy.
Niceeeeeeeee thanks
Thanks 😊
if its not chemistry, i will understand it . i think is much more physics than chemistry so its fine
its *
thank u sir for very clear and very good lecture
A very big tank made of steel evacuated and it's collapsed. However steel strength is much more than atmospheric pressure
Please explain this phenomenon with actual equation ??
Please
Also an aneroid barometer workdone in joules with actual data
Please show actual data ?
We can produced how many joules with help of atmospheric pressure volume changing per unit volume ????
So we energized whole universe ?🙏🙏🙏🙏🙏🙏
Energy problems solved on every planet with very simple ideas that we concentrated radiation to the point and we achieved fusion from radiation by concentration of small energy to the point so energy density become equal to fusion reactor
Once this happens and energy become available everywhere
Please do the proper math over it