The magnitudes of each of the two displacement vectors r1 and r2 are equal to 29.0 m. determine the smallest angle between the two vectors in order for the magnitude of the sum of the two vectors (r1 + r2) to be 27 times greater than the magnitude of the difference of the two vectors (r1 − r2).

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?