An iron boiler of mass 257 kg contains 861 kg of water at


An iron boiler of mass 257 kg contains 861 kg of water at 18.9°C. A heater supplies energy at the rate of 46300kJ/hr. How long does it take for the water to reach the boiling point? Specific heat of iron = 450J/(kg·K).

 

How long does it take for the water to all have changed to steam? Latent heat of vaporization of water is Lv = 2260 kJ/kg.

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Physics: An iron boiler of mass 257 kg contains 861 kg of water at
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