Final answer:
The new connection between unconnected tubes relates to the physics principle of flow within systems. The analogy of water through pipes is used to explain how electrons flow through wires in a circuit, highlighting concepts like connectivity and the instantaneous flow of charges in a circuit upon a stimulus.
Step-by-step explanation:
The new connection mentioned in the student's question, where a series of tubes A through E are described as being connected in sequence, reflects a conceptual model often used in physics to explain the flow of electricity in a circuit. Comparing electrons flowing through wires to water flowing through pipes is a common analogy in physics to help students understand electrical circuits. While electrons and water molecules both move through their respective mediums, they nevertheless have essential differences. Electrons move through a conductive material due to electric fields, whereas water molecules flow due to pressure differences.
Regarding a light bulb being partially evacuated, it is typically done to reduce the oxidation of the filament, thereby allowing it to get hotter and glow brighter without burning out quickly.
In a broader context, this question ties into the interconnectedness of components in a system, whether it's a circuit, a series of tubes, or even canals connecting bodies of water, all serving to illustrate the principle of connectivity and flow within a network. The flow of charges in a circuit is immediate and continuous, similar to how a locomotive pulls all its carriages upon starting. Therefore, the sequence of connections between tubes A-E can be compared to the sequence of components in a circuit or the connections in a biological system, such as a bloodstream.