$2\mathrm{.}2$ Compare and contrast the heat capacity $c_p$ of common brick, plain carbon steel, engine oil, water, and soil. Which material provides the greatest amount of thermal energy storage per unit volume? Which material would you expect to have the lowest cost per unit heat capacity? Evaluate properties at $300$ K $.$ The properites are given below $($in Table A$3).$

PROPERTIES: Table A$.3,$ Common brick $)$: $=1920k\frac{g}{m^3},c_p=835\frac{J}{k}g*K.$ Table A$.$ I. Plain carbon steel