On clear day, sunlight delivers approximately 1000 j each second to a 1 m2 surface; smaller areas receive proportionally less--half the area receives half the energy. a 12% efficient solar cell, a square 16 cm on a side, is in bright sunlight. how much electric power does it produce?

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