A heater coil rated at 1000 W s connected to a 110 V mains. How much time will take to melt 625 gm of ice at `0^(@)C`. (for ice `L=80(Cal)/(gm)`)

How much steam at 100^@C will just melt 64 gm of ice at -10^@C ?

How much heat is required to melt 5 gm ice?

The entropy change in melting 1g of ice at 0^@C . (Latent heat of ice is 80 cal g^(-1) )

In summer, Kamal decides to take a bath at noon. Temperature of the water in overhead tank is 45^(@)C so he decides to mix ince from refrigerator. The temperature of the ice in refrigerator. The temperature of the ice in refrigerator is -10^(@)C . How much ice will be needed to prepare 20 kg of water at 25^(@)C for bath? (Assume no loss to surrounding latent heat of fusion of ice =80cal//gm , specific heat of ice =0.5cal//gm^(@)C

In summer, Kamal decides to take a bath at noon. Temperature of the water in overhead tank is 45^(@)C so he decides to mix ince from refrigerator. The temperature of the ice in refrigerator. The temperature of the ice in refrigerator is 10^(@)C . How much ice will be needed to prepare 20 kg of water at 25^(@)C for bath? (Assume no loss to surrounding latent heat of fusion of ice =80cal//gm , specific heat of ice =0.5cal//gm^(@)C

When a man does exercise on a treadmill machine, work doen by him is supplied in the form of heat of an ice bath. Find how much he has to do to convert a piece of 5 gm of ice at -3^(@)C to steam at 100^(@)C .Given that the specific heat of ice is 0.5 cal/ gm^(@)C , latent heat of fusion of ice is 80 cal/gm and laten heat of vaporization of water is 540 cal/gm.

A 5 cm thick ice block is there on the surface of water in a lake. The tmeperature of air - 10^(@)C , how muct time it will take to double the thickness of the block? (L = 80 cal//g, K_(ice) = 0.004 cal//s-K, d_(ice) = 0.92 g cm^(-3))

An electric heater is marked 110 V - 550 W and it is to be used in 200 v mains .How much resistance is to be added in series the heater ?