Question

explain zearoth law of thermodynamics !!

where is the brainliest answer?​

Answer 1

The Brainliest Answer! induindu; Genius. STATEMENT : the amount of heat supplied to a STATEMENT : the amount of heat supplied to a system is equal to the algebraic sum of
the change in internal energy of the system and the amount of external work done
EXPLANATION: when ∆ Q is the quantity of heat supplied to system ,a system a part of it is used to increase its internal energy ∆U and the rest is used in doing external work ∆ W .
The mathematical expression of this law is
∆Q = ∆U + ∆W .
it is a special case of the law of conservation of energy
EXAMPLE: the explosive of a fire crakers in an insulated steel drum

SIGN CONVENTION :
1) work done ∆W by the system is +ve and work done on the system is -ve
2) heat is supplied (∆Q) to the system is + ve ,heat taken from the system is -ve
3) increase in internal energy (∆U) is + ve and decrease in internal energy is -ve
the limitations of this law are

1) it does not tell about the direction of heat flow
2) it does not tell about the efficiency with which heat can be converted into work

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Answer 2

Hope this answer helps you

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