An 18-month-old female arrives by ambulance at the emergency department. the paramedics report that there was no known history of any recent trauma, and no known fever, vomiting, or other unusual behavior. there were no known ingestions or medications in the household. there was no evidence of trauma

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)