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A new design for a kettle is made from two layers of plastic separated by a vacuum. It is claimed that the water stays hot for at least 2 hours after boiling.

The energy transferred from the water in the kettle to the surroundings in 2 hours is 81,230J. The mass of water in the kettle is 0.36kg. The specific heat capacity of water is 4,200J/kg°C. The initial temperature of the water is 100°C.

Calculate the temperature of the water in the kettle after 2 hours.

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