# The constant A in Equation 19.2 is 12π4R/5 , where R is the

# The constant A in Equation 19.2 is 12π4R/5 , where R is the

The constant A in Equation 19.2 is 12p4R/5 , where R is the gas constant and ?D is the Debye temperature (K). Estimate ?D for copper, given that the specific heat is 0.78 J/kg-K at 10 K.