Final answer:
In plumbing, hose connections are controlled by valves, which prevent water from entering the hose until the valve is opened. Additionally, plumbing includes air-filled tubes near water faucets to absorb shock and prevent water hammer.
Step-by-step explanation:
In building plumbing systems, the connection points for hoses are controlled by valves. No water is allowed into the hose until the valve in question is opened. This is similar to an electrical circuit where a capacitor holds a charge until a switch is opened, at which point there is no flow of electricity. The same concept applies to water in a closed system; when the valve is closed, water is held back and pressure is maintained, comparable to the tension on a membrane, ensuring that when the valve is opened, water can flow immediately and with consistent pressure.
Moreover, in plumbing, air-filled tubes, often referred to as air chambers or water hammer arrestors, are commonly installed near water faucets. These tubes are necessary because they provide a cushion to absorb the shock wave created when a faucet is suddenly turned off, preventing water hammer, which can cause damage to pipes and fixtures.