The shear stress is being calculated between the locations.
What unit does the shear flow Q have?
The force per unit of length is the same as the force per foot in the US.
How do you find the Q of the first moment of area?
The first moment of area is simply the distribution of a beam section’s area relative to an axis. The area is divided by its distance from the axis.
What is the symbol of shear stress?
Shear stress is a symbol.
What is Q in VQ it?
Q is the first moment of the portion of the area above the horizontal line where the shear is being calculated.