The following is a list of potential hazardous waste generators. explain the possible hazardous wastes generated from each and how each waste is classified as hazardous. (a) dry cleaners (b) automobile service stations (c) "do-it-yourself" garage mechanics stations (d) users of household pesticides (raid, etc.) (e) metal finishers (e. g., ball bearing manufacturer) (f) hospitals (g) doctors' offices

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis

Starting wih an energy balance on a rectangular volume element, derive the one- dimensional transient heat conduction equation for a plane wall with constant thermal conductivity and no heat generation.