Enter the initial thermal energy (J) and the final thermal energy (J) into the calculator to determine the Heat Engine Work.

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## Heat Engine Work Formula

The following formula is used to calculate the Heat Engine Work.

Whe = Q1 - Q2

- Where Whe is the Heat Engine Work (J)
- Q1 is the initial thermal energy (J)
- Q2 is the final thermal energy (J)

To calculate the heat engine work, simply subtract the final thermal energy by the initial thermal energy.

## How to Calculate Heat Engine Work?

The following two example problems outline how to calculate the Heat Engine Work.

**Example Problem #1:**

- First, determine the initial thermal energy (J). In this example, the initial thermal energy (J) is given as 70.
- Next, determine the final thermal energy (J). For this problem, the final thermal energy (J) is given as 30.
- Finally, calculate the Heat Engine Work using the equation above:

Whe = Q1 – Q2

Inserting the values from above and solving the equation with the imputed values gives:

Whe = 70 – 30 = 40 (J)

## FAQ

**What is thermal energy?**

Thermal energy refers to the internal energy present in a system due to its temperature. It is the total kinetic and potential energy of the particles in an object, which can be transferred as heat.

**How does a heat engine work?**

A heat engine operates by converting thermal energy into mechanical work. It typically involves a working substance (like gas) that expands and contracts within a cylinder, moving a piston as it absorbs heat from a high-temperature source and releases it to a lower temperature sink, thus producing work.

**What are some common applications of heat engines?**

Heat engines are widely used in various applications, including internal combustion engines in cars, steam turbines in power plants, and Stirling engines in solar power generation. They play a crucial role in converting heat energy into mechanical work, powering numerous devices and vehicles.