A sphere of solid material of specific gravity 8 has a concentric spherical cavity and just sinks in water. The ratio of radius of cavity to that of outer of the sphere must be

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A sphere of solid material of specific gravity 8 has a concentric spherical cavity and just sinks in water. The ratio of radius of cavity to that of outer of the sphere must be
07
Oct
A sphere of solid material of specific gravity 8 has a concentric spherical cavity and just sinks in water. The ratio of radius of cavity to that of outer of the sphere must be A sphere of solid material of specific gravity 8 has a concentric spherical cavity and just sinks in water. The ratio [...]
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