Li and raj are playing football. they take turns trying to run past each other with the football. li weighs 125 pound and raj weighs 175 pounds. li discovers that if he changes direction quickly when running, he can always dodge out of the way before raj can tackle him. why is li able to avoid raj’s tackle? choose the best description.

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.