10 J of work and 5 J of heat is supplied to the system, then

10-j-of-work-and-5-j-of-heat-is-supplied-to-the-system-then

10 J of work and 5 J of heat is supplied to the system, then the system is which of the following?

A. Steady state

B. Unsteady state

C. Closed

D. None of the mentioned

This question was addressed to me in my homework.

My enquiry is from Energy Balances for Closed, Steady-State Systems topic in portion Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering

The correct choice is B. Unsteady state

For explanation: ∆E = 10 + 5 = 15 J, which is not equal to zero, so the system is unsteady state system.