How can hydraulic multiplication be used?
It can be used to apply more force from one point to another from an increased incompressible fluid.
What are some challenges to designing an effective hydraulic system?
The challenges are there should be no twists and turns that would increase resistance to flow. Must be connected carefully or they might leak.
What is the difference between a hydraulic system and a pneumatic system?
A pneumatic system works for gases and hydraulic systems are used for liquids.
How does a vacuum cleaner work?
The fan pushes the air particles out of the vacuum which creates a low pressure area and then the high pressure outside moves inside and the particles are filtered so the dirt is trapped in the vacuum once the pressure is absorbed.