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Answer :
Final answer:
The correct answer is b. 32 lbs. Using Archimedes' principle, the buoyant force exerted by one cubic foot of seawater is 32 pounds, meaning that you would need to exert a force of 32 lbs on the string to hold it up.
Explanation:
To calculate the force needed to hold up the bag of seawater submerged in the ocean, we use Archimedes' principle, which states that the buoyant force is equal to the weight of the water displaced. Given that one cubic foot of seawater weighs about 64 pounds, the buoyant force exerted by it is half of its weight, which is 32 pounds.
Therefore, to hold the bag up, you would need to exert a force of 32 lbs on the string.The correct answer is b. 32 lbs.
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