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You have a beach ball which has a radius of 11 cm and a mass of 0.3 kg. You have a lead ball which has the same radius but has a mass of 120 kg.

A) You immerse the beach ball under the water. What is the buoyancy force felt by the beach ball?

B) To keep the beach ball stationary under the water what is the force you need to apply? (UP is positive)

C) You immerse the lead ball under the water, what is the buoyancy force felt by the lead ball?

D) To keep the lead ball stationary under the water what is the force you need to apply? (UP is positive)

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