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A spherical iron ball is placed on a large block of dry ice at 0°C . The ball sinks into the ice until it is half submerged. Density of iron is 7.7 x 103 kg / m3 . Density of ice is 920 kg / m3. Specific heat capacity of iron is 504 J/kg – K and latent heat of fusion of ice is 336 x 103 J / kg . The initial temperature of iron is ……
a) 37.64°C
b) 39.82°C
c) 42.62°C
d) 38.64°C
A spherical iron ball is placed on a large block of dry ice at 0°C . The ball sinks into the ice until it is half submerged. Density of iron is 7.7 x 103 kg / m3 . Density of ice is 920 kg / m3. Specific heat capacity of iron is 504 J/kg – K and latent heat of fusion of ice is 336 x 103 J / kg . The initial temperature of iron is ……
a) 37.64°C
b) 39.82°C
c) 42.62°C
d) 38.64°C
b) 39.82°C
mgB (T – 0) = me L
msB T = V/2 PL
msB T = m/d2 L x Pℓ
By Solving T = 39.82°C.