The items listed below are found in a science classroom. 1. heart made of plastic with many of its parts labeled 2. clay formed to look like earth and other planets 3. a giant plastic plant cell with removable cell parts 4. fill in the blank. these items are all examples of models experiments variables controls

Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?