500 joule of heat was supplied to a system at constant volume. It resulted in the increase of temperature of the system from `20^(@)C` to `25^(@)C`. What is the change in internal energy of the system ?

Explanation

To solve the problem, we need to find the change in internal energy of the system when 500 joules of heat is supplied at constant volume, resulting in a temperature increase from 20°C to 25°C.

### Step-by-Step Solution:

1. **Understanding the Concept**:
- At constant volume, the heat supplied to the system is equal to the change in internal energy (ΔU). This is a key concept in thermodynamics.

2. **Given Data**:
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