4. A double window is constructed by two layers of glass separated by a layer of dry stagnant air (as shown in figure below). The heat transfer area of the double window is 1.7 m². The temperature at the two surfaces of the window is 20.0 °C and - 8.0 °C, and the convection effect can be neglected. S (a) T₁ (20 °C) Glass: Air: Glass: Glass kı Te Air k2 T3 X1 = 6.35 mm X2 = 3.00 mm x3 = 6.35 mm Glass T4 (-8.0 °C) kı = 0.869 W/m-K k2 = 0.026 W/m.K k3=0.869 W/m.K Calculate the heat loss through window, showing the derivation steps in detail.

For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).   Paragraph   Arial   14px                                                         P 0 WORDSPOWERED BY TINY   25 points    QUESTION 4 The tank in figure below is filled through point 1 with velocity equal to 5 m/s and point 3 with volumetric flow rate equal to 0.012m3/s. If the level of the water h is constant, determine the exit velocity V2. If the water level h varies and V2 =8 m/s, find the rate change (dh/dt). Assume d=1m.

With the unique velocity profile of each liquid, determine the distance from the leading center to that point of the profile where the velocity is 3.2 m/s.

Fluid Mechanics easy question