Delicious "bubble tea" is made using flavored balls of tapioca, which sink to the bottom of the beverage. Tapioca has a specific gravity of 1.5 [ − ] . If you order a glass of bubble tea and observe 11 tapioca balls, which can be modeled as spheres, at the bottom of your beverage with an average radius of 0.63 centimeters [ c m ] , what is the weight in units of pounds-force [ l b f ] of tapioca in your glass of bubble tea?

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Q: where R is the

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.