The Sankey diagrams below show the energy transfers in two light bulbs. The useful energy output for these light bulbs is carried to the energy stores of the environment by
What is the missing word?
Enter your answer

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.