In the Roman soldier model for refraction, what happens to the first soldier who hits the muddy stream?HELP PLZ A. They slow down and turn slightly B. They slow down and keep going straight C. They speed up and keep going straight D. They speed up and turn slightly

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.