Two current‑carrying wires are perpendicular to each other. one wire lies horizontally with the current directed toward the east. the other wire is vertical with the current directed upward. assume that the crossing point is the midpoint of each wire. what is the direction of the net magnetic force on the horizontal wire due to the vertical wire? north

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.