By looking at your code, it seems like you're trying to let the user enter positive numbers until the user enters a negative number. To achieve this, you need to indent int(input("Enter a number, negative to stop")) inside the loop.
The second answer choice is correct.
In side the Hard drive there is a <span> large shiny, circular "plate" of magnetic material called a </span>platter<span>, divided into billions of tiny areas called clusters. This Plate haves a pin over it that reads all the information that is on it. When this plate or pins damage thats when the hard drive need to be replace. </span>
Answer:
A pneumatic system is a system that uses compressed air to transmit and control energy. Pneumatic systems are used extensively in various industries. Most pneumatic systems rely on a constant supply of compressed air to make them work. This is provided by an air compressor.
A hydraulic system is a drive technology where a fluid is used to move the energy from e.g. an electric motor to an actuator, such as a hydraulic cylinder. The fluid is theoretically uncompressible and the fluid path can be flexible in the same way as an electric cable.
Explanation:
<h3>Examples of pneumatic systems and components
</h3><h3>Air brakes on buses and trucks.
</h3><h3>Air brakes on trains.
</h3><h3>Air compressors.
</h3><h3>Air engines for pneumatically powered vehicles.
</h3><h3>Barostat systems used in Neurogastroenterology and for researching electricity.
</h3><h3>Cable jetting, a way to install cables in ducts.
</h3><h3>Dental drill.</h3>
<h3>Hydraulic systems use the pump to push hydraulic fluid through the system to create fluid power. The fluid passes through the valves and flows to the cylinder where the hydraulic energy converts back into mechanical energy. The valves help to direct the flow of the liquid and relieve pressure when needed.</h3>
