What percentage `T_(1)` is of `T_(2)` for a `10%` efficiency of a heat engine?

Explanation

To find what percentage \( T_1 \) is of \( T_2 \) for a heat engine with 10% efficiency, we can follow these steps:

### Step-by-Step Solution

1. **Understand the Efficiency Formula**:
The efficiency (\( \eta \)) of a heat engine can be expressed as:
\[
\eta = \frac{T_2 - T_1}{T_2}
...