steel pressure vessel (_y = 250 MPa, E = 200 GPa) has a length of 4 m and  a diameter of 1.2 m (cylindrical). It is  designed to hold natural gas at a pressure of 6 MPa.   Calculate the  wall thickness required to safely contain flammable gases, taking into account a safety factor of 5.0 to prevent failure. Use the "maximum principal stress" criterion.  Next, calculate the Von Mises stress corresponding to the stress state of  the reservoir.   Enter your numerical answer. Please include free body diagrams and possible steps

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Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?