A 5.00 kg mass is at the origin. A 7.00 kg mass is located at x = 0.600m, and a 4.00 kg mass is at x= .900m what is the net gravitational force on 5 kg mass

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system