The specific heat capacity of water is 4186 J kg - 1 C - 1 ∘ and specific heat capacity of glass is 840 J kg - 1 C - 1 ∘ . If a glass heated at 80 C ∘ is kept in water at 80 C ∘ . What will be the effect of temperature in both the cases ?

The specific heat capacity is the amount of thermal energy required by the object to increase its temperature by 1 C ∘ . The specific heat capacity of water is 4186 J kg - 1 C - 1 ∘ which means 4186 joules of heat energy is required to increase the temperature of 1 kg of water by 1 C ∘ , the amount of thermal energy can be calculated by the expression, Q = m × s × t , where ' m ' is the mass of the object ' s ' is the specific heat capacity and ' t ' is the temperature. If 1 kg of water is heated at 80 C ∘ then the effect of this temperature on the water will be the gain of 334880 J of thermal energy ( Q = 1 kg × 4186 J kg - 1 C - 1 ∘ × 80 C ∘ = 334880 J ) . The specific heat capacity of glass is 840 J kg - 1 C - 1 ∘ , which means 840 J of thermal energy is required to raise the temperature of 1 kg of glass by 1 C ∘ and if it is heated at 80 C ∘ , then the effect of this temperature on 1 kg of glass will be gain of 67200 J of thermal energy ( Q = 1 kg × 840 J kg - 1 C - 1 ∘ × 80 C ∘ = 67200 J ) .