(f) of Lab part 2(i) cp and cp are similar since they are linearly different by R(ii) it is more effective to make this assumption at temperatures around STP. One area where this assumption would be problematic is in high-enthalpy flows and combusting flows such as in engines(iii)Errors in calculating the speed of sound in an ideal gas increase as temperature rises. It stands to reason, therefore that it is prudent to measure c using variable specific heats in many aerospace applications, such as in the case of supersonic aircraft experiencing high levels of heating at aircaft boundaries where sensors would be placed.