An object will float in a substance if it is less dense that it, and if they are more they will sink. Water is 1g/mL, and most people are quite similar to this (so close that usually if someone in water breathed out, they sink, breath in, they float). What makes the difference is not how much someone weighs, but their density, which depends on how much muscle and fat they have. Fat is actually less dense than water - so having more fat will actually make a person more bouoyant. Muscle is more dense than water so a person having more muscle will sink. So a person weighing 240 pounds could float while a 160 pound person could sink - it depends on what their body is like.
Because of their density: People with a lower body fat percentage (fat is less dense than water) sometimes cannot stay on the surface of the water without motion to propell themselves upwards, although most people *do* remain at the surface if they relax and lean back.
Bone is considerably more dense than water, muscle is a little more dense, and fat less dense.
If the weight of water you displace is less than your own weight, you will sink.
== Yes because the volume of water displaced by a cherry is enough that the buoyant force of the water is able to counteract the force of the cherry's weight.==
Yes. The salt stabalizes them in the water. If you have ever heard of the dead sea, anything really can float in there. If there is salt in water a peanut can float.
Because some objects are a lot denser than water so the sink and others are less denser so they float
No, because a hockey puck has a higher density than water. In some cases, objects with higher density than water can still float on the water, if they are small enough to avoid breaking the surface tension of the water. This is also the case if the object's mass is distributed across a large enough area, so you could float a penny on water if you put it down flat across the water, but it would not float if you dropped it in on its side. You also could not float that penny if you melted it down and made it into a sphere, for example.
Whether an object floats or not depends on its density. Density is the amount of mass in a volume, or mass divided by volume. If and object's density is less than that of water, it will float in water, and if an objects density is higher than that of water, it will sink in water. raw material (fishballs will sink down);but it will floats when it is cook. why
== Yes because the volume of water displaced by a cherry is enough that the buoyant force of the water is able to counteract the force of the cherry's weight.==
On some liquids it will float, on others it will not.
This is easy. Muscle does not float. If the person has body fat the person will float, the more fat the better the person floats. The less fat, the less a person floats.
Sulphur will float on water.
It is waters greater density than air that allows some substances to float on water.
Yes. The salt stabalizes them in the water. If you have ever heard of the dead sea, anything really can float in there. If there is salt in water a peanut can float.
It's far from clear what the actual question is. Some objects float in both salt and fresh water, some objects float in neither, and some objects float in one but not the other. Any object that floats in fresh water will float in salt water, but the reverse is not true.
In water, you mean? If an object has a larger density than water, it will float; otherwise, it won't. From my own experience, when I inhale, when my lungs are full of air, I float without effort. When I exhale, I start to sink - and need some effort to remain at the surface.
The types of objects that will float on water are foil, most rubber, and some plastic.
That depends on the person - a live human body is about the same density as water - some people sink, some float - just. In other words, you are about weightless in water.
All people cannot float. If anyone floats, that is because their body density is lower than that of water which is highly unlikely. people float because they are bloated up with air which is less dense than water. On places like the sea, the huge quantities of salt make the density of water greater than that of the people in it thus they can float there.
Some plants, like water hyacinth, float in water. They have special types of leaves that help them to stay afloat.