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Let Pa represent the density of aluminum and p, that of iron. Find an expression of the radius (ra) of a sed aluminum sphere that balances a solid iron sphere of radius r on an equal-arm balance

Let Pa represent the density of aluminum and p, that of iron. Find an expression of the radius (ra) of a sed aluminum sphere that balances a solid iron sphere of radius r on an equal-arm balance

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1. Let pa represent the density of aluminum and p, that of iron. Find an expression of the radius (ra) of a sed aluminum sphere that balances a solid iron sphere of radius r on an equal-arm balance.
Transcribed Image Text:1. Let pa represent the density of aluminum and p, that of iron. Find an expression of the radius (ra) of a sed aluminum sphere that balances a solid iron sphere of radius r on an equal-arm balance.
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