4. The top of a male dovetail is 4 inches wide. If the angle is 55° and the depth is 5/8 inch, what is the width at the bottom of the dovetail? Page #

Determine the area of the shaded region. The value of b is 4 inches. Write the numerical value only. -5.6 in.- - 5.6 in - 5.6 in. b 5.6 in. 4.2 in. |-4,2 in.→|

Question 6 A weir is a barrier that spans across the width of a river and is used to alter its flow characteristics. Typically, this results in a change in the height of the river level. The figure below shows the cross-section of a broad- crested weir. The symbols in the figure are Hw – the height of the weir (m), Hà – the head above the weir (m), and H = Hw + HA – the depth of the river upstream of the weir. The flow across the weir (Qw) (m'/s) can be computed using the following expression: 3/2 3/2 Qu = CuBug ) H Hw Weir 3 Bw where Cw is a weir coefficient (dimensionless), Bw is the weir width (m), and g is the gravitational constant, taken as 9.81m/s'. The weir coefficient can be determined using the weir height (Hw): 1+ H/H 2+ H/Hw Cu = 1.125. In this problem, assume: g = 9.81m/s", Hw = 0.8 m, Bw = 8 m, and Qw = 1.3 m/s. Complete the following: (a) Determine the upstream depth (H = Hw + Hà) using simple fixed-point iteration with an initial guess of Hi=0.5Hw. Complete two…

Find the center of gravity of the wire.