This question asks about the fundamental principle behind why an object floats in a fluid, according to Archimedes' principle. We need to understand the relationship between buoyancy, weight, and density.
Correct Option: A) The object has low density compared to the fluid. This is the direct condition for an object to float according to Archimedes' principle. An object floats when the buoyant force (weight of displaced fluid) is greater than or equal to its own weight. This occurs when the object's average density is less than or equal to the fluid's density.
The question asks about the crucial property that determines whether an object floats or sinks in a fluid, according to Archimedes' principle. This principle relates the buoyant force to the weight of the displaced fluid. The interaction between the object's properties and the fluid's properties dictates the outcome.
C) Density — Density is defined as mass per unit volume (\(\rho = m/V\)). As shown in the step-by-step explanation, an object floats if its density is less than or equal to the density of the fluid, and sinks if its density is greater than the fluid's density. Therefore, density is the crucial property.
This question asks about the principle behind why a steel ship floats, specifically referencing Archimedes' principle. We need to understand how buoyant force relates to the weight of the ship and the water it displaces.
Correct Option: A) The ship's shape allows it to displace enough water to generate buoyant force greater than its weight. This is correct because the hollow shape of the ship increases its overall volume, allowing it to displace a large volume of water. The buoyant force generated by this displaced water then becomes equal to the ship's total weight, enabling it to float. If the buoyant force were only equal to the weight, it would float; if it were greater, it would rise until the buoyant force equals the weight.
The question asks for the SI unit of buoyant force. To answer this, we need to recall the definition of buoyant force and its nature as a type of force. All forces, regardless of their specific type (gravitational, electromagnetic, buoyant, etc.), share the same SI unit.
A) Newton (N) is the correct SI unit for buoyant force because buoyant force is a type of force, and the SI unit for all forces is the Newton.
This question tests understanding of Archimedes' principle, which describes the buoyant force exerted on an object immersed in a fluid. The key is to relate the volume of the immersed object to the volume of water displaced.
A) The water level rises. This is correct because when an object is immersed, it displaces a volume of water equal to its own submerged volume. This displaced water causes the water level in the container to rise.
This question deals with the principle of buoyancy, specifically Archimedes' principle. An object's behavior (floating or sinking) in a fluid depends on the comparison between its weight and the buoyant force exerted by the fluid.
Correct Option: B) Sink. When the weight of an object is greater than the buoyant force acting on it, the net force is downwards, causing the object to sink.