Aflagpole consists of a flexible, 7.107.10 m tall fiberglass pole planted in concrete. the bottom end of the flagpole is fixed in position, but the top end of the flagpole is free to move. what is the lowest frequency standing wave that can be formed on the flagpole if the wave propagation speed in the fiberglass is 27302730 m/s?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

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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?