Apositive point charge q1 creates an electric field of magnitude e1 at a spot located at a distance r1 from the charge. the charge is replaced by another positive point charge q2, which creates a field of magnitude e2 = e1 at a distance of r2 = 2r1. how is q2 related to q1?

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