Circuit analysis involving parallel and series conditions

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Two branches of a circuit are classified as parallel when they connect directly between the same two nodes without any intermediate connections. In contrast, series connections involve components linked end-to-end, sharing the same current. Analyzing circuits requires understanding these configurations, as they affect voltage and current distribution. Parallel circuits allow for multiple paths for current, while series circuits result in a single path. Mastering these concepts is essential for effective circuit analysis.
asd852
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Homework Statement
when we say two components in circuit are in parallelries,there are prerequisite for the components,for example,we cant state that two nodes are in parallel,so what exactly are the prerequiste
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no specific
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Two branches of a circuit are said to be in parallel if they are connected between the same two nodes, with no intermediate connections to either branch.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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