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 will follow these steps:

### Step 1: Identify the known values
- 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, \( m = 6.0 \, kg/min = 6.0 \times 1000 \, g/min = 6000 \, g/min \)
- Thermal conductivity of brass, \( K = 109 \, J/(s \cdot °C) \)
- Heat of vaporization of water, \( L_v = 2256 \, J/g \)
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