A commonly used method of fastening one part to another part is called shrink fitting. A steel rod has a diameter of 2.0026 cm, and a flat plate contains a hole whose diameter is 2.0000 cm. The rod is cooled so that it just fits into the hole. When the rod warms up, the enormous thermal stress exerted by the plate holds the rod securely to the plate. By how many Celsius degrees should the rod be cooled?

What is physics Physics is the study of fundamental laws of nature. These laws can be expressed as mathematical equations. These laws can appear quite simple, but much complexity can arise from them. In physics we use the SI system for unit labeling Length is measured in meters (m) Mass is measured in kilograms (kg) Time is measured in seconds (s) Length is standardized using the distance traveled by light in a vacuum in 1/299,792,458 of a second Some typical lengths (to 1 significant figure): Diameter of our Galaxy: 8 x 10 2m Radius of the Earth: 6 x 10 6m Length of a Football Field: 1 x 102m Diameter of a CD: 1 x 10 -1m Diameter of a hydrogen atom: 1 x 10 -m0 Diameter of an electron: 3 x 10 -1m One kilogram