In this diagram, medium a represents water and medium b represents air. the phenomenon in this diagram, moving from a to b, is called a) diffraction. b) dispersion. c) refraction. d) resolution.

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.