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A brass boiler has a base area of 0.15m^...

A brass boiler has a base area of `0.15m^2` and thickness 1 cm. It boils water at the rate of 6 kg per minute when placed on a gas stove. Estimate the temperature of the part of the flame in contact with the boiler. Thermal conductivity of brass is `=109Js^(-1)m^(-1)K^(-1)`, Heat of vapourisation of water is `2256xx10^3Jkg^(-1)`

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