An earthware vessel loses 1 g of water per second due ot evaporation. The water equivalent of the vessel is 0.5 kg and the vessel contains 9.5 kg of water. Find the time required for the water in the vessel to cool to 28^(@)C from 30^(@)C. Neglect radiation losses. Latent heat of vaporisation of water in this range of temperature is 540 cal/g.

An earthware vessel loses 1 g of water per second due ot evaporation.

1.	An earthware vessel loses 1 g of water per second due ot evaporation. The water equivalent of the vessel is 0.5 kg and the vessel contains 9.5 kg of water. Find the time required for the water in the vessel to cool to 28^(@)C from 30^(@)C. Neglect radiation losses. Latent heat of vaporisation of water in this range of temperature is 540 cal/g.
Answer» ANSWER :`=37.5` SEC

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