An electric heater of 2kw is used to beat 0.5kg of
Water in a kettle of heat Capacity 400 JK-1. The
Initial water temperature is 20°C. Negleting heat losses;
i) How long will it take to heat the water to its boiling
Point 100°c
ii) Starting from 20°c, what mass of water is boiled away in 5 minutes
(Assume for Water, Specific heat Capacity = 4200 Jkg-k-1 and Specific latent heat of Vaporisation = 2X10^6 Jkg-1)?
In Physics
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Asked by Ibzeeh on 12th April, 2023
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