Why does a coin sink in water?I know this answer but it might help others. Does anyone else know?

Question

Answer

Because a coin have more density than water............

and another reason is due to the Archimedes principle..if any object displacement the water that is equal to its weight ..................so,it will float .........................if the upthrust force is more than downward force then it float........

Answer

Archimedes' buoyancy principle states that buoyant force -- what keeps the ship afloat -- is equal to the weight of water that is displaced when the ship enters the ocean. If the weight of displaced water is at least equal to the weight of the ship, the ship will float. The displaced water around a coin weighs less than the coin, so the coin will sink.

Answer

Introduction:

When a coin is dropped in water, it sinks instead of floating. This is because of the properties of water and the coin.

Density:

The main reason why a coin sinks in water is because it is denser than water. Density is the mass of a substance per unit volume. Water has a density of 1 gram per cubic centimeter (g/cm³). If an object has a density that is greater than 1 g/cm³, it will sink in water. Coins, being made of metals such as copper, nickel, or silver, are far denser than water and thus sink.

Surface Tension:

Another factor that can affect whether an object sinks or floats in water is surface tension. Surface tension is the cohesive force between water molecules that causes them to stick together and form a 'skin' on the surface of the water. This is why some small objects, such as paper clips or needles, can float on water despite being denser than it. However, the surface tension of water is not strong enough to support the weight of a coin, so it sinks.

Conclusion:

In conclusion, when a coin is dropped in water, it sinks because it is denser than water and the surface tension of water is not strong enough to support its weight.

Answer

Just include this answer along with the other answers given.

A coin is a flat body, more dense than water. The pressure exerted by air only falls on the upper surface of the coin, pushing it downward. if the coin had a structure like that of a bottle cap, then the air pressure would be exerted sideways too, keeping the coin above the surface of water. :)

Answer

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