00:01
We know that thermal diffusivity is equal to thermal conductivity over the density times the specific heat capacity.
00:10
From here, we get the density equals to thermal conductivity over thermal diffusivity times the specific heat capacity.
00:21
We know that q is equal to mass times the specific heat capacity times the change in temperature.
00:33
So, the heat rate is equal to q over t equals to mcp delta t over t.
00:40
We also know that mass is equal to volume times density.
00:46
Now, plugging this here, we have q over t equals to rho v cp delta t over times t.
00:59
Now, plugging the value of density from here to here, we have q over t equals to k alpha cp times v cp delta t over times t.
01:18
Now, cp and cp cancel out and we are left with q over t equals to k over alpha times v over t times delta t.
01:38
The value of thermal conductivity is equal to 30 times 10 to the power minus 30 n .m...