Within the same program define a function called freq_count(). This function accepts a str and a list of words as arguments. It traverses the list of words and searches each word and counts the occurrences of the substring str within each word. Print each word along with the number of substring occurrences found with the associated word.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa. s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)