they are the same because they are both units of mass per unit volume.
The amount of buoyancy an item has is determined by its weight in comparison to its volume (or simply put, its density) The less dense it is, the more buoyant it is. For a full explanation of how buoyancy works go to the related question "What is the buoyancy principle?" in the Related Questions section below.
buoyant force
Negative buoyancy is when the gravitational pull on a diver is greater than the buoyant force. This means that the diver is being pulled downward, and that the buoyant force is doing negative work (work that is in the opposite direction of the displacement). Positive buoyancy is the opposite situation in which the buoyant force of the diver is greater than the gravitational pull, which makes the diver move upwards. Usually, a person's weight is slightly more than the weight of the displaced amount of water. For example, a person who weighs 80kg displaces 79dm2 of water, which weighs 79kg, that is, he has about 1kg of negative buoyancy. As for your question whether this negative buoancy is a unique feature for black people, the answer is no. it is related to the person's density.
The experiment is about density change of salt solution and the buoyancy force due to density difference of the object (egg) and medium (salted water).
If the average density of an object is less than water (1.0 g per mL) it will float in water, and if it is more than 1.0g/mL it will sink in water. So the lower the density, the greater the buoyancy.
Buoyancy is the factor of things that float or sink. Density is related because if the object has more density than water, it will sink. But, if it has less density than water, the object will float.
Its density.
The amount of buoyancy an item has is determined by its weight in comparison to its volume (or simply put, its density) The less dense it is, the more buoyant it is. For a full explanation of how buoyancy works go to the related question "What is the buoyancy principle?" in the Related Questions section below.
greater density tends to less buoyancy
The higher the density the lower the buoyancy.
A body has positive buoyancy when its density is lower than the density of the fluid the body is in.
A life jacket is also known as a floatation or buoyancy aid - it acts to increase your buoyancy. So what do we mean by this? Well, buoyancy can be described simply as how easily an object will float in a fluid (or gas), where the more buoyant the object the better it will float. Buoyancy is related to the density of an object which is in turn related to the amount of mass a given object has relative to it's volume. As the density of an object gets larger compared to the density of the fluid it is floating in, its buoyancy will decrease and it will become less able to float. As the density of the object becomes larger than the density of the fluid it is floating in, it will sink. Now that we understand buoyancy, we can explain how a life jacket works. A life jacket is mainly filled with gas which has a very low mass. As such when worn by a person, it acts to significantly increase their volume for only a very small increase in their mass. This means that they have a lower density than normal which increases their buoyancy and helps them to float.
buoyancy has to deal with density, gravity, air, and water
Yea
Due to hydrogen bonds, the density of water decreases as it freezes (decrease starts at 4oC). To see a full explanation of why ice floats in water, see the related question below.
Buoyancy is the ability to float, so if the density is high, it'll hold up something. (see? FLOATING. BUOYANCY.)
buoyant force