Light is made incident at an angle of 34.05° from quartz to air. The angle of refraction in air is 60.54º and the refractive index of air is 1.00. What is the
refractive index of quartz?

A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping.the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?