An automobile engine transforms chemical energy into mechanical energy, and automobile engines have a range where they are most efficient. Given these facts, the efficiency of an engine range is due to what among the following options:
- Movement of an air mass
 - principals of aerodynamics
 - transportation technology
 - heat production
 - heat is produced
 - A transportation fuel
 - Inches or fractions of inches.
 - chemical to mechanical energy


 

        chemical to mechanical energy 