An earthen pitcher used in summer cools water in it essentially by evaporation of water from its porous surface. If a pitcher carries `4 kg` water and the rate of evaporation is `20 g` per hour, temperature of water in it decreases by `/_\T` in two hours. The value of `/_\T` is close to (ratio of latent of evaporation to specific heat of water is `540^(@)C`)

An earthen pitcher loses 1 g of water per minute due to evaporation. If the water equivalent of pitcher is 0.5 kg and the pitcher contains 9.5 kg of water, calculate the time required for the water in the pitcher to cool to 28^@C from its original temperature of 30^@C Neglect radiation effect. Latent heat of vapourization of water in this range of temperature is 580 cal/g and specific heat of water is 1 kcal//gC^(@)

An earthen pitcher loses 1 g of water per minute due to evaporation. If the water equivalent of pitcher is 0.5 kg and the pitcher contains 9.5 kg of water, calculate the time required for the water in the pitcher to cool to 28^@C from its original temperature of 30^@C Neglect radiation effect. Latent heat of vapourization of water in this range of temperature is 580 cal/g and specific heat of water is 1 kcal//gC^(@)

An earthen pitcher loses 1 g of water per minute due to evaporation. If the water equivalent of pitcher is 0.5 kg and the pitcher contains 9.5 kg of water, calculate the time required for the water in the pitcher to cool to 28^@C from its original temperature of 30^@C Neglect radiation effect. Latent heat of vapourization of water in this range of temperature is 580 cal/g and specific heat of water is 1 kcal//gC^(@)

During exercise, a person may give offf 180 kcal of heat in 30 min by evaporation of water from the skin. How much water has been lost? Given that latent heat of vaporization of water is 540 cal/gm.

A pitcher contains 200kg of water 0.5 gm of water comes out on the surface of the pitcher every second through the pores and gets evaporated taking energy form the remaining water. Calculate the approximate time (in min) in which temperature of the water decreases by 5^(@)C . Neglect backward heat transfer form the atmosphere to th water. (Write the answer to the nearest interger) Specific heat capacity of water = 4200 J//Kg^(@)C Latent heat of vaporization of water 2.27 xx10^(6)J//Kg

A pitcher contains 200kg of water 0.5 gm of water comes out on the surface of the pitcher every second through the pores and gets evaporated taking energy form the remaining water. Calculate the approximate time (in min) in which temperature of the water decreases by 5^(@)C . Neglect backward heat transfer form the atmosphere to th water. (Write the answer to the nearest interger) Specific heat capacity of water = 4200 J//Kg^(@)C Latent heat of vaporization of water 2.27 xx10^(6)J//Kg