An atmospheric pressure heating furnace burns propane fuel (C3H8) with an air-to-fuel ratio of 25 (on a mass basis). Determine the heat transfer per kilogram of fuel burned when the temperature of the products is such that liquid water just begins to form in kJ/kgfuel [heat_transfer].

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.