El conductor de un vehículo que lleva una velocidad de 30m/s hace soñar el claxon que emite en una frecuencia de 300hz si frente al vehículo hay una montaña calcula la frecuencia del eco que percibe el conductor

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?