Answer:
The voltage delivered by a primary battery is unrelated to its size.
If you mean which of the two is denser, then you want the oceanic crust.
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The mass of the displaced fluid can be expressed in terms of the density and its volume, m = ρV. The fluid displaced has a weight W = mg, where g is acceleration due to gravity. Therefore, the weight of the displaced fluid can be expressed as W = ρVg.
