Which physical quantity in a nuclear reaction is considered equivalent to the Qvalue of the reaction?

Explanation

To solve the question, "Which physical quantity in a nuclear reaction is considered equivalent to the Q value of the reaction?", we need to understand what the Q value represents in the context of nuclear reactions.

### Step-by-Step Solution:

1. **Understanding Q Value**:
The Q value of a nuclear reaction is defined as the amount of energy released (or absorbed) during the reaction. It is a measure of the energy difference between the reactants and the products.

2. **Nuclear Reaction Basics**:
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