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Competency #4

Answer and Explanation

The correct answer is B.

1. The larger the mass of an object, the larger the buoyant force.
   
   
   The mass does not directly relate to the buoyant force.
2. The larger the submerged volume of an object, the greater the buoyant force.
   
   
   This is the definition of buoyant force, so it is always true.
3. For two identically shaped objects placed in water the one that floats has a greater buoyant force than the one that sinks.
   
   
   This is not true. The one that floats has less volume submerged under the water, so its buoyant force must be smaller than the one that sinks. (Even though they have the same shape and thus same total volume, the buoyant force is only due to the volume that is submerged).
4. More than one is always true.
   
   
   Only B was always true.