The principles of buoyancy, also known as Archimedes' principle, state that anything completely or partially immersed in a fluid (gas or liquid) at rest is influenced by a buoyancy 'up or buoyant, force whose magnitude is equal to the weight of the fluid displaced by the object. The volume of displaced fluid is equivalent to the volume of an object completely immersed in a fluid or the volume fraction below the surface for an object partially immersed in a liquid. The weight of the displaced portion of the fluid is equivalent to the magnitude of the buoyant force. The buoyant force on an object floating in a liquid or gas is also equivalent in magnitude to the weight of the floating object and is in the opposite direction; the object neither rises nor sinks. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Density is why some objects float in a liquid and others sink. Water has a density of 1 g/cm3. If an object floats in water it means that it has a density of less than 1 g/cm3. If an object sinks in water, it has a density greater than 1 g/cm3. The buoyancy of an object is its tendency to float or rise in a liquid. An object floating in water is said to have positive buoyancy, because it has a lower density than the fluid in which it floats. A sinking object is negatively buoyant, because it has a greater density than the fluid in which it is floating. To determine the buoyancy of an object, the density of an object is needed. Density is defined as the mass of an object per unit volume. Density can be increased by decreasing the volume of an object. The three states of matter, solids, liquids and gases have different properties in terms of volume. Both solids and liquids have defined volumes, while gases do not. The particles of a solid are compacted and arranged in a pattern. Particles in a liquid are packed together but are not arranged in a pattern. Particles in a gas are not compacted and are not arranged in a pattern. Pressure is defined as the continuous physical force exerted on or against an object by something in contact with it. In the mid-1600s Robert Boyle studied the relationship between the pressure and volume of a gas held at a constant temperature. Boyle's law describes the relationship between the pressure and volume of a fixed amount of gas at a constant temperature. Please note: this is just an example. Get a custom paper from our expert writers now. Get a custom essay The law shows that the product of pressure and volume are observed to be nearly constant. The product of pressure and volume is defined as a constant for an ideal gas. The formula is pressure*volume = constant. There are some real examples of Boyle's law. For example, when you quickly open a bottle of soda, it sometimes fizzes and comes out of the bottle. This is due to carbonation of the drinks and changes in volume and pressure inside the bottle. The ideal gas law states that the volume (V) occupied by n moles of any gas has a pressure (P) at temperature (T) in Kelvin. Works Cited Halliday, D., Resnick, R., & Walker, J. (2013 ). Foundations of Physics (10th ed.). Wiley. Serway, R. A., & Jewett, J. W. (2013). Physics for Scientists and Engineers with Modern Physics (9th ed.). Cengage Learning. Cutnell, J. D., & Johnson, K. W. (2017). Physics (10th ed.). Wiley.Giancoli, D.C. (2014). Physics: Principles with Applications (7th ed.). Pearson. Tipler, P. A., & Mosca, G. (2007). Physics for Scientists and Engineers (6th ed.). W. H. Freeman. Hewitt, P. G. (2014). Conceptual Physics (12th ed.). Pearson.Serway, R. A., & Vuille, C. (2014). University Physics (10th ed.)..