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volume of fluid displaced. If a buoyant force of 40 N corresponds to a displaced volume equal to 80% of the block’s volume, a buoyant force of 10 N (1/4 of the original force) must correspond to a displaced volume equal to 20% of the block’s volume (1/4 of the original displaced volume).
Any object, whether a solid, a gas, a liquid, or a plasma (a collection of ionized particles), has a density. The density is defined as the mass per unit volume and is given the Greek symbol rho (r). So the density is defined as. r = m/V. (kg/m3) A substance which is more dense will have more mass for a given volume.
The molecules in a liquid are not locked in place and can move with respect to each other. The distance between molecules is similar to the distances in a solid, and so liquids have definite volumes, but the shape of a liquid changes, depending on the shape of its container.
In this chapter, we shall study some common physical properties of liquids and gases. Liquids and gases can flow and are therefore, called fluids. It is this property that distinguishes liquids and gases from solids in a basic way. Fluids are everywhere around us.
Flow rate Q is defined as the volume V flowing past a point in time t, or Q = \(\frac{dV}{dt}\) where V is volume and t is time. The SI unit of flow rate is m 3 /s, but other rates can be used, such as L/min.
Volume in physics refers to the amount of space occupied by a body or object. It’s a fundamental physical quantity measured in cubic meters (m³) in the International System of Units (SI), but it can also be expressed in other units, such as liters (L) for liquids. In dimensional analysis, volume is described as a derived physical quantity ...
When a solid object is placed in a fluid, it displaces its volume in the fluid. In other words, it takes the place of a volume of the fluid equal to its own volume. For example, if you placed 1 cubic meter (1 m3) object in a full container of water, 1 cubic meter of water would flow over the sides of the container.
