From an apple tree 2 metres high, a 100g mass apple fell of the tree, what work did it do?

How have the competing explanations' experiments on atoms affected the development of the atomic model?

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.

Convection occurs when thermal energy is transferred by the movement of