A layer of oil (n1 = 1.46) is floating on top of water (n2 = 1.33). A light beam traveling in oil is hitting the oil-water interface. (a) What is the speed of light in oil? (b) What is the critical angle of total internal reflection of this oil-water interface?

Why does lightning travel from clouds to the ground?

A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe