23. Find the coverage area for a microcellular system where path loss follows the simplied model with γ = 3, d0 = 1, and K = 0 dB and there is also log normal shadowing with σ = 4 dB. Assume a cell radius of 100 m, a transmit power of 80 mW, and a minimum received power requirement of Pmin = −100 dBm.

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.