Question

Water is being heated in a closed pan on top of a range cooker while being stirred by a paddle wheel. During the process, 44 kJ of heat is transferred to the water, and 6 kJ of heat is lost to the surrounding air. The paddle-wheel work in to the water amounts to226 Nm. By applying an energy balance determine the final internal energy of the system (in kJ) if its initial internal energy is 10 kJ to 1 decimal place.

Fig: 1