A brass boiler has a base area of `0.15m^2` and thickness 1.0 cm it boils water at the rate of `6.0 kg//min`, When placed on a gas. Estimate the temperature of the part of the flame in contact with the boiler. Thermal conductivity of brass`=109 J//s-.^@C` ) and heat of vapourization of water `=2256 J//g`.

Explanation

To solve the problem, we need to determine the temperature of the flame in contact with the brass boiler. We will use the concept of heat transfer through conduction and the heat required to vaporize water.

### Step-by-Step Solution:

1. **Identify Given Data:**
- Base area of the boiler, \( A = 0.15 \, m^2 \)
- Thickness of the boiler, \( L = 1.0 \, cm = 0.01 \, m \)
- Rate of boiling water, \( m = 6.0 \, kg/min = 0.1 \, kg/s \)
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