A stream of air 25 degrees Celsius and 1 atm is laden with particulate matter (unit density spheres) of only two sizes: 1 micrometer and 5 micrometer. The stream flows through a pipe at an average velocity of 20 m/s. The pipe exhausts into a water mist scrubber where the water droplets average 100 micrometer in diameter. Based only on a comparison of their impaction numbers, what will be the ratio of particles collected (5 micrometer to 1 micrometer)? Show work.