Write an expression for the heat energy liberated by a hot body.

Explanation

To write an expression for the heat energy liberated by a hot body, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept**:
- Heat energy (Q) is the energy transferred due to a temperature difference. When a hot body cools down, it releases heat energy.

2. **Identify the Variables**:
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