In a thermodynamic process,the pressure of a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) According to the first law of thermodynamics,$\Delta Q = \Delta U + \Delta W$.Given that the gas releases $20 \, J$ of heat,the heat supplied is $

Vedclass · Accepted Answer

$18$

Vedclass · Answer

(B) According to the first law of thermodynamics,$\Delta Q = \Delta U + \Delta W$.Given that the gas releases $20 \, J$ of heat,the heat supplied is $\Delta Q = -20 \, J$.Since $8 \, J$ of work is done on the gas,the work done by the gas is $\Delta W = -8 \, J$.Substituting these values into the first law equation:$-20 \, J = \Delta U + (-8 \, J)$.$\Delta U = -20 \, J + 8 \, J = -12 \, J$.We know that $\Delta U = U_f - U_i$,where $U_f$ is the final internal energy and $U_i$ is the initial internal energy.Given $U_i = 30 \, J$,we have:$U_f - 30 \, J = -12 \, J$.$U_f = 30 \, J - 12 \, J = 18 \, J$.Therefore,the final internal energy is $18 \, J$.

In a thermodynamic process,the pressure of a fixed mass of a gas is changed in such a manner that the gas releases $20 \, J$ of heat when $8 \, J$ of work is done on the gas. If the initial internal energy of the gas was $30 \, J$,then the final internal energy will be .... $J$.

Similar Questions

The $P-V$ diagram of a system undergoing a thermodynamic transformation is shown in the figure. The work done on the system in going from $A \to B \to C$ is $50 \, J$ and $20 \, cal$ of heat is given to the system. The change in internal energy between $A$ and $C$ is ...... $J$.

In changing the state of a thermodynamic system from state $A$ to state $B$, the heat supplied to the system is $Q$ and the work done by the system is $W$. The change in its internal energy is

In a thermodynamic process,the pressure of a fixed mass of gas is changed in such a manner that the gas releases $30 \ J$ of heat and $18 \ J$ of work is done on the gas. If the initial internal energy of the gas was $60 \ J$,then the final internal energy will be ..... $J$.

When $150 \ J$ of heat is supplied to a system,the work done by the system is $110 \ J$. The change in the internal energy of the system is ....... $J$.

If heat given to a system is $6 \, kcal$ and work done is $6 \, kJ$,then the change in internal energy is ....... $kJ$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module