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a 20cm^3 block of lead and a 20cm^3 block of copper are completely under water. Each...

a 20cm^3 block of lead and a 20cm^3 block of copper are completely under water. Each is suspended by a thread so that they both hang at the same height in an aquarium filled with water. Which of the following is true? Please explain to why you chose the correct answer.

a. The buoyant force is greater on the lead than on the copper.

b. The buoyant force is greater on the copper than on the lead.

c. The buoyant force is the same on both blocks

d. More information is needed to choose the correct answer.

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Answer #1

here

Fb = V * p * g

the V is the volume of liquid displaced

p is the density of the liquid displaced.

the upthrust is the same for both, since in both cases, the liquid and the volume of liquid displaced is the same

so the buoyant force is same for both blocks

C.) The buoyant force is the same on both blocks

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