2. The following explicit approximation to the fiction factor,f, in turbulent pipe flow is due to Swamee and Jain: 0.25 k,/D 5.74 ( 3.7 Re09 f= log101 + Here Re is the Reynolds number, ks the roughness, and D the pipe diameter. Write a VBA program to input the Reynoids number and the roughness factor/diameter ratio in the main program. Then evaluate f for Re 1,500,000 and ks /D 0.1 in a function. Import an Excel function to evaluate log base 10