What is the density of a boat?

What is the density of your average boat?

That question has no answer, because I don't own a boat. But regarding any boat in general, if the boat is afloat, then its density is less than 1.0 .

Why do boats with water sink?

When the density of entire assembly (boat, peoples, products, equipments, water etc.) has a density greater then the water density the boat is sinking.

What part of the boat makes it float?

The boat floats because the entire boat - including any air contained within - has a total density less than the density of the water.

How does a boat not sink?

the boat has equal or less density than the water. :P

How does changing the shape of the metal affect the density of the boat?

Indeed yes. Density is defined as mass per unit volume. If all the mass were concentrated in one lump, your boat would no longer float. If the metal walls of the boat were a little thinner, you'd have more boat volume, and lower density.

How does a heavy boat floats on water?

They have strong wood, and are mechanical crates to lift them aboard.

Why does water density affect boats floating?

The water density is higher than the boat's therefore it floats on the water.

What force does a boat use?

up thrust gravity buoyancy density

How do concrete boats float?

This all depends on buoyancy of the liquid the boat is in, and the density (therefore the mass and volume) of the concrete boat.

What is the density of water vs density of a boat?

The density of pure water is approximately 1000 kg per cubic meter. It isn't, strictly speaking, useful to compare the density of a boat to the density of water. A boat can be constructed of material considerably denser than water (consider a steel battleship or aircraft carrier) and still float. What's important is that the boat must be able to displace a volume of water equivalent to the weight of the boat, without allowing the water to enter the boat. ---------------- Addendum ---------------- The answer your teacher is looking for: "The density of the water is greater than the density of the boat.". This answer is not correct in all cases. If the actual displacement of the boat (sans air) is used to determine density, all steel boats would be denser than water, and most motor boats would be denser than water. A boat which (sans air) is less dense than water cannot fully sink. Now for the next phase of comprehension: the boat has a degree of buoyancy not just in the water, but also in the air. To measure the total bouyancy (which is 0 while floating), you must understand that the mass of the displaced air (above water level) and the mass of the displaced water (below water level) is the sum of the mass of the air (below water level) and the boat (without air). Were the air denser than the boat, the boat would lift (sans surface tension) from the water and float away in the air.

A boat will float higher in the Atlantic Ocean than in the Potomac River because ocean water has -?

Greater density

How are density and the ability of a boat to float related?

According to Archimedes' Principle (which he described in his treatise On Floating Bodies) a body immersed in a fluid experiences a buoyant force equal to the weight of the fluid it displaces. In the case of a floating boat, if the average density of the boat and the air within its hull is less than the density of the water, the mass of the water displaced as it settles into the water will be equal to the to the total mass of the boat but it will displace a volume less than the volume of the boat, thus enough of the boat will remain above the water to allow it to float.