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A copper block of mass 2.5 kg ts heated ...

A copper block of mass` 2.5` kg ts heated in a furnace to a temperature of `500 ^(@) C` and then placed on a large ice block. What is the maximum amount of ice that can melt? (Specific heat of copper = `0.39 J g^(-1) K^(-1), " heat of fusion of water " = 335 J g^(-1))`.

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`1.5 kg`
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A copper block of mass 2.5 kg is heated in a furnace to a temperature of 500^(@)C and then placed on a large ice block. What is the maximum amount of ice that can melt ? (Specific heat of copper =0.39" Jg"^(-1)K"^(-1), heat of fusion of water =335" Jg"^(-1) ).

What is the heat capacity of copper of 40 g and specific heat "0.3 erg g"^(-1)(""^(@)C)^(-1) ?

A brass boiler has a base area of 0.15 m^(2) and thickness 1.0 cm. It boils water at the rate of 6.0 kg/min when placed on a gas stove. Estimate the temperature of the part of the flame in contact with the boller. Thermal conductivity of brass = 109 J s^(-1) m^(-1) K^(-1) , Heat of vaporisation of water = 2256 xx 10^(3) J kg^(-1) .

Calculate the heat required to convert 3 kg of ice at -12" "^(@)C kept in a calorimeter to steam at 100" "^(@)C at atmospheric pressure. Given specific heat capacity of ice =2100" J kg"^(-1)K^(-1) , specific heat capacity of water =4186" J kg"^(-1)K^(-1) , latent heat of fusionn of ice =3.35xx10^(5)" J kg"^(-1) and latent heat of steam =2.256xx10^(6)" J kg"^(-1) .

A' thermacole' icebox is a cheap and an efficient method for storing small quantities of cooked food in summer in particular. A cubical icebox of side 30 cm has a thickness of 5.0 cm. "if "4.0 kg of ice is put in the box, estimate the amount of Ice remaining after 6 h. The outside temperature is 45^(@) C and co-efficient of thermal conductivity of thermacole is 0.01 J s^(-1) m^(-1) K^(-1) . [Heat of fusion of water = 335 xx 10^(3) J kg^(-1) ]

What is the temperature of the steel - copper junction in the steady state of the system shown in Fig. Length of the steel rod = 15.0 cm, length of the copper rod = 10.0 cm, temperature of the furnace =400" "^(@)C , temperature of the other end =0" "^(@)C . The area of cross section of the steel rod is twice that of the copper rod. (Thermal conductivity of steel =50.2" J s"^(-1)m^(-1)K^(-1), and of copper =385" J s"^(-1)m-1" "K^(-1) ).

A refrigerator converts 100 g of water at 25^(@)C into ice at -10^(@)C in one hour and 50 minutes. The quantity of heat removed per minute is (specific heat of ice = 0.5 "cal"//g^(@)C , latent heat of fusion = 80 "cal"//g )

A refrigerator converts 100 g of water at 25^(@)C into ice at -10^(@)C in one hour and 50 minutes. The quantity of heat removed per minute is (specific heat of ice = 0.5 "cal"//g^(@)C , latent heat of fusion = 80 "cal"//g )

A 'thermacole' icebox is cheap and efficient method for storing small quantities of cooked food in summer in particular. A cubical icebox of side 30 cm has a thickness of 5.0 cam if 4.0 kg of ice is put in the box, estimate the amount of ice remaining after 6 h. The outside temperature is 45^(@)C , and coefficient of thermal conductivity of thermacole is 0.01" Js"^(-1)m^(-1)K^(-1) . [Heat of fusion of water =335xx10^(3)" Jkg"^(-1) ]

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