A research technician fills a transparent vertical column with hydraulic oil. The technician drills a microscopic pinhole in the vertical side of the column so that the oil begins to escape.
At what angle to the column's vertical wall does the oil initially flow out?
Explain why the oil flows out of the column at this specific angle.
A pneumatic piston exerts a constant force of 6.4 N6.4\text{ N}6.4 N over a sealing plate of area 0.016 m20.016\text{ m}^20.016 m2.
Calculate the pressure exerted on the sealing plate, stating the correct unit.
The force remains constant, but the sealing plate is replaced with one that has three times the contact area. What happens to the pressure exerted on the plate?