A wave is traveling through air at an angle of 75° before it enters an eye lens cover. If air has an index of refraction of 1.00, and an eye lens cover has an index of refraction of 1.38, at what angle is the wave traveling once it enters the eye lens cover?

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?