code: def flow_rect_weir(Height, Width):
      
      #Checking input validity
      ut.check_range([Height, ">0", "Height"], [Width, ">0", "Width"])
      return ((2/3) * con.VC_ORIFICE_RATIO
              * (np.sqrt(2*gravity.magnitude) * Height**(3/2))
              * Width)
docs: Return the flow of a rectangular weir.