Aglass sphere (n = 1.50) with a radius of 11.0 cm has a tiny air bubble 3.00 cm above its center. the sphere is viewed looking down along the extended radius containing the bubble. what is the apparent depth of the bubble below the surface of the sphere?

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?