Which equation describes the net work done for a complete cycle of a heat engine

The equation that describes the net work done for a complete cycle is:

W= Qh-Qc

Explanation:

Where:

W= work done

Qh=quantity of heat absorbed from a system

Qc= Quantity of heat expelled from a system.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

c, 1a hope this