A block of unknown material is submerged in ethyl alcohol. Light in the ethyl alcohol is incident on the block at an angle of incidence of 33º. The angle of refraction of the light in the block is 25°. What is the index of refraction of the material of the block? [Show all work, including equation and substitution with units] * ​

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i. e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)