You are designing a thin transparent reflective coating for the front surface of a sheet of glass. the index of refraction of the glass is 1.52, and when it is in use the coated glass has air on both sides. because the coating is expensive, you want to use a layer that has the minimum thickness possible, which you determine to be 104 nm. what should the index of refraction of the coating be if it must cancel 550-nm light that hits the coated surface at normal incidence?

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.