A horizontal pipe of diameter 0.775 m has a smooth constriction to a section of diameter 0.465 m . The density of oil flowing in the pipe is 821 kg/m3 . If the pressure in the pipe is 8520 N/m2 and in the constricted section is 6390 N/m 2 , what is the rate at which oil is flowing

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