10.- Un rayo luminoso pasa del aire al agua donde la velocidad se reduce a 3/4 C. Si el ángulo de refracción es de 30°. Determine el ángulo de incidencia. Seleccione una:
a. b) 22,02°
b. c) 41,84°
c. a) 20,92°

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.