IN the 13th edition of practice problems for civil engineering PE exam, on page 17-15, why is there a 1/2 in the formula, where it says:
"to calculate a loss for any other flow in the upper branch"
Ef upper 2 = Ef upper (.....) in that paranthesis
i didnt understand why there is a 1/2 in the denominator
"to calculate a loss for any other flow in the upper branch"
Ef upper 2 = Ef upper (.....) in that paranthesis
i didnt understand why there is a 1/2 in the denominator