Answer:
kinectic + electric = internal
Step-by-step explanation:
Internal energy U of a system or a body with well defined boundaries is the total of the kinetic energy due to the motion of molecules and the potential energy associated with the vibrational motion and electric energy of atoms within molecules. Internal energy also includes the energy in all the chemical bonds.
12 months in a year
2300/12
we can round 2300 to 2400 (because it is an estimate) and divide by 12 to give an approximation of $200 each month