A person in good physical condition can put out 100 watt of useful power for several hours at a stretch, perhaps by pedalling a mechanism that drives an electric generator.

Answer: buoyancy forceexplanation: in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

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