Argon-fluoride excimer lasers are now commonly used in corrective eye surgery. the short, intense pulses of light generated by these lasers are able to cleanly ablate microscopic layers of corneal tissue, effectively reshaping the lens with little or no trauma to the rest of the eye. calculate the energy delivered to the cornea per laser pulse(in j), if one pulse from an argon-fluoride excimer laser contains 2.5*1016photons, each with a wavelength of 193 nm. (1 nm = 10-9m)a. 1.3*10-40 jb. 1.0*10-27jc. 1.0*10-18jd. 6.2*105je. 2.6*10-2j

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?