The function below takes a single string input, containing a web site user's first name. this function should return a personalized html span containing a greeting and the user's first name as provided in the following form: (assuming that 'julia' was the given first name.) hello, julia

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)