Air
flows through a rectangular section Venturi channel . The width of the channel is 0.06 m; The
height at the inlet (1) and outlet (4) is 0.04 m. The height (3) in
the Bosphorus is 0.02 m. Compressibility and viscous effects can
be ignored (ρwater = 1000 kg / m3
, ρ air = 1.23 kg / m3)
a) Calculate the flow rate if the
water in the small tube connected to the static pressure tap in the throat is drawn as 0.10 m as shown?
b)Calculate the height (h2) in section (2) according to the flow rate you find in part a .
c)Calculate the pressure at the inlet (1) for the fluid to flow ( according to the values you find in a and b )?

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?