What is the pressure of methane in the balloon

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1.Given that the max shear strength of the the concrete shore is 10 kPa and the engineer requires a F.S. of 2.5, find the required are of concrete for the thrust block.

If another shear strength is only 6 MPa, find the new F.S. wiht the previously calcuated area.

2.Helium gas contains trace amounts of methane. Consider a helium balloon pressurized to 5 psi. If methane molar mixing ratio is 800 ppmv, what is the pressure of methane in the balloon?

Reference no: EM13563698

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