Archimedes' Principle: Buoyancy Explained

A wooden block is floating in water. Which of the following statements accurately describes the relationship between the buoyant force acting on the block and the weight of the water displaced by the block?

An object with a volume of 0.05 m is submerged in a fluid with a density of 1200 kg/m. What is the buoyant force acting on the object?

A metal cube is submerged in a container of water. If the cube displaces a volume of water equal to half of its own volume, how does the density of the metal compare to the density of water?

A submarine changes its depth by adjusting the amount of water in its ballast tanks. According to Archimedes' principle, how does increasing the amount of water in the ballast tanks affect the buoyant force on the submarine?

A hydrometer is used to measure the density of different liquids. It floats higher in more dense liquids and lower in less dense liquids. Which statement best explains why the hydrometer floats at different levels?

A submarine adjusts its ballast tanks to achieve neutral buoyancy at a certain depth. If the submarine then moves into a region of the ocean with slightly higher water density, what adjustment would it likely make to maintain its depth?

A hot air balloon is floating at a constant altitude. What would cause the balloon to begin to descend?

A wooden block is floating in a container of water. If salt is added to the water, increasing the water's density, how will the wooden block behave?

An object is suspended in a fluid. What change in conditions would cause the object to sink?

A hydrometer is used to measure the density of different liquids. In which type of liquid will the hydrometer float the highest, assuming the same hydrometer is used each time?

A cargo ship is traveling from a freshwater lake to the ocean. What will happen to the ship's draft (the depth to which it is submerged) as it enters the ocean, and why?

A small, dense object sinks in water. What can be said about the buoyant force acting on it?

A plastic ball and a lead ball of the same volume are submerged in water. Which statement is true regarding the buoyant force on each?

Considering the limitations of Archimedes' principle, in which scenario would the principle's prediction be least accurate?

How did Archimedes apply his principle to determine if King Hiero's crown was pure gold?