In a lava lamp, a waxy fluid (say ρ= 1225[kg/m3]) is surrounded by another fluid (say...

In a lava lamp, a waxy fluid (say ρ= 1225[kg/m3]) is surrounded by another fluid

(say ρ= 1200[kg/m3]), they are mutually insoluble, and they are heated by a lamp in the

bottom of the apparatus. The densities of these materials are very similar, where the

waxy one is greater at normal room temperature. As the liquids are heated, the waxy

density becomes less than the surrounding fluid and it rises. What is the buoyant force on

a spherical waxy blob, with radius 0.10[m] in the surrounding fluid? What is the force

due to gravity on this blob? When the blob heats and its density becomes 1100[kg/m3],

how much of its volume is submerged? How do the buoyant force and the force due to

gravity compare now?

Expert Solution

This problem will require the formula for buoyant force.

genius_generous answered 10 months ago

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