Physics
Boats and Watercraft

# Why does a coin sink and a boat float?

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###### 2013-10-24 01:28:53

An object will sink if it has greater density than water (or whatever liquid it is place in); it will float if it has less density than the liquid.

An object will sink if it has greater density than water (or whatever liquid it is place in); it will float if it has less density than the liquid.

An object will sink if it has greater density than water (or whatever liquid it is place in); it will float if it has less density than the liquid.

An object will sink if it has greater density than water (or whatever liquid it is place in); it will float if it has less density than the liquid.

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###### 2013-10-24 01:28:53

An object will sink if it has greater density than water (or whatever liquid it is place in); it will float if it has less density than the liquid.

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## Related Questions

because the boat is made out of stuff that can float

The science is called "displacement". If the shape of the boat allows the amount of the boat in the water to be less weight than the water it displaces it will float. If the amount of the boat in the water weighs more than the water it displaces it will sink.

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What detimines whether an oject will sink or float is the amount of fluid that it displaces. If the amount of fluid displaced weighs more than the object then it will float, if it weghs less it will sink. A boat can be made of any material, even concrete.

An object will float on water if it has less density than the water.

Aluminum foil can sink and float depending on how you place it in the liquid. If you crumple aluminum foil into a tight ball, it will sink, but if you fold the aluminum foil into a boat-like structure, it will float.

It depends upon the shape. A ceramic in the shape of a boat could float. A solid ceramic ball would probably sink.

Yes it does because depending on the materials of the boat and how much their mass is can change the buoyancy of the toy boat. Boat can be designed to have less volume in order for it to have less density and be able to float. So if the material's mass is alot if can make the boat sink. If the material's mass is not alot then it can help the boat float. If the shape is designed to have more volume than mass it will float. If not then it will sink.

The rock is heavy and solid !! The boat has buoyancy !! The same as wood !!

All plastic items float on water, so therefore a plastic boat floats on water.

that a car should float and that a boat should sink

Boats can sink. They are usually made of materials that allow them to displace water, and permit them to float. From time to time, that material will break down, and the boat will sink.

Bouyancy. A Boat/ship is hollowed out to be use to passengers, were as rocks are solid and have a lot less buoyancy.

Provided the boats and the ships displace their weight in water without the water coming inboard, they will float and not sink. A boat made of wood is likely to float even when full of water because wood tends to float. It is all to do with displacement and freeboard.

Actually, humans do float. It's just that some of your clothes weigh you down.For the reason on why boats float, it is because the water is denser than the boat filled with air. If you fill a boat with water, then it will sink.

It really depends on the shape. A cube of steel will sink but a boat displaces less water due to its shape and floats.

It does if you spread it in to a boat or barge shape because other than that it will just sink.

The clay boat (like a steel ship) displaces its own weight in the water. So, as long as the sides of the clay boat (or steel ship) is above the water level, it will float. A solid piece of clay will (like a stone) sink immediately.

3 things that float are boats, plastic (not good for the ocean) and a feather. These float because they are less dense than the water. 3 things that sink are rocks, iron and a sink (sink is what helps something stay in place e.g. A boat is staying in place, not moving about with the help of a sink). Hope this answer helps :D

The weight of the boat displaces the same weight of water, and while there is still sides of the boat above the surface, the boat will float. If such an open boat is swamped, the gunnels may sink to sea level, and may even sink beneath. Usually, water-tight compartments, light, floating material, and any wood in the boat's construction, will help prevent the boat sinking entirely, if at all.

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