Why does a comet's tail point away from the sun? 1choice 1 the solar wind blows the tail away from the sun. 2 it is being pulled by a nearby black hole. 3 the moon's light only shines on part of the comet. 4 the comet's tail is following the path of jupiter.

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.