Which describes the correct procedure when converting a number from scientific notation to a standard notation if the power of 10 is -10? (egenuity experimental desing principles quiz)

(a. move the decimal point to the left) (B. move the decimal point to the right) (C. add 20 to the number) (D. subtract 20 from the number)

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.