A tall standpipe as shown in Figure Q1(a) with an open top has an inner diamet d = 2.1 m and wall thickness t = 20 mm, Given the weight density of water y = 9.81 kN/m³ and water pressure is p = y (i) calculate the height h of water that will produce a circumferential stress of 12 MI in the wall of the standpipe. Calculate the axial stress in the wall of the tank due to the water pressure. ... (ii)

Example: What is the pressure at the center of the pipe B?

A spherical tank of diameter 1.275 m and wall thickness 40 mm, contains compressed air at a pressure of 17 MPa. What is the absolute maximum shear stress?

3. Consider a hot-air balloon with fixed volume VB = 1.1 m³. The mass of the balloon envelope, whose volume is to be neglected in comparison to VB, is m̟ = 0.187 kg. The balloon shall be started, where the external air temperature is T1 = 20°C and the normal %3D

Q5/ A hollow pressurized sphere having radius r=122 mm .and wall thickness t=10mm. is lowered into a lake (see figure). The compressed air in the tank is at a pressure of 165 kPa (gage pressure when the tank is out of the water). At what depth d will the wall of the tank be subjected to a compressive stress of 620 kPa? Answer

I got Wrong Solution Previous time. Please Re solve it .

An underwater gate 8 m wide is held closed by a force, F, as shown in the figure. If the force is applied at the middle of the gate, what is the minimum value required to keep the gate closed? take density of water= 996kg/m3

Assume two connected alveoli having radius 0.5 mm and 0.25 mm, respectively: A. If the surface tension is that of water (= 0.070 N m-1), calculate the transwall pressure for the two alveoli using LaPlace’s Law. (P = 2T/r, where T is surface tension and r is the radius) B. If surfactant lowers the surface tension to 0.028 N m-1, what would the pressure be? C. Why surfactant can stabilize alveoli (e.g., preventing them from collapsing). Include 1 example of a synthetic surfactant used to treat respiratory distress syndrome of the newborn.

As shown in the figure, a sluice gate with a width of 1 m is supported by hinge A (the sluice gate BC is integral). Find the force, F, that must be applied to B to keep the gate from opening. However, the fluid is water and the thickness and weight of the gate are ignored.

Question #4 A crane is used to lower weights into the sea (p = 1025 kg/m³) for an underwater construc- tion project (see figure below). You are required to calculate the tension in the rope of the crane due to a rectangular 0.4-m x 0.4-m x 3-m concrete block (p= 2300 kg/m³) when: 41. Rope Concrete block W Concrete block W Air Water (A) suspended in the air. (B) completely immersed in water. (C) Does the tension of the rope decreased in water? Why? How much reduction in percentage? [2 marks] (4 marks] (4 marks]