The material when heated, it's thermal energy increases. The material which require 450 J and thermal energy to increase its temperature by 1°C is Tin.
Thermal energy is the energy of a material depending on temperature, increased or decreased.
Block has mass m = 2kg, the energy required is 450 J and increase its temperature by 1°C = 273 +1 =274 K. The specific heat s of unknown material is find out by the relation.
Heat required Q = m x s x ΔT
450 J = 2 x s x 274
s = 0.821 J/kg.K
This specific heat value matches with the material tin.
Thus, the material which require 450 J and thermal energy to increase its temperature by 1°C is Tin.
Learn more about thermal energy.
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