A polarized beam of intensity I0 is directed into a device consisting of two polarizers. the beam is vertically polarized, and the transmission axis the first polarizer is 23 with respect to the vertical direction. If the transmission axis of the second polarizer is horizontal, what is the intensity of the light transmitted through the second polarizer?

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

where’s the list ? the question is incomplete

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me