Porosity is calculated is the ratio between the pore volume of a medium and its total volume, and it is expressed as n=Vv/Vt. The Vv refers to the pore or void's volume, and it can have air (Va) and Water (Vw).
Continue ReadingSince porosity is inherently a fraction, it can be expressed as a number between 0 and 1, where a higher decimal indicates a higher level of porosity. As the level of porosity increases, the volume of the solids within the medium decreases, and vice versa. Porosity is also expressed as percentage by multiplying the fraction by 100. Hence, 0.2 porosity is equivalent to a 20 percent porosity.
Learn more about MeasurementsThe formula for density, which is mass divided by volume, can be manipulated to have the volume as the unknown. Given the mass and the density, the volume can be found by dividing the mass by the density.
Full Answer >The conversion of milligrams to milliliters is dependent on density and can be found using the formula volume = mass/density, where the volume is in milliliters, the mass in milligrams and the density in milligrams per milliliter. The various densities of different substances give different mass to volume ratios.
Full Answer >To find the volume of a shape, apply and solve the right volume formula that correlates with the specific shape in question. Some different shapes might be a cube, cylinder, pyramid or cone.
Full Answer >The decibel (dB) is the unit used to measure the intensity (I) of sound or noise level, and it is given in terms of a logarithmic function of a ratio of power intensities. In physics, the formula used for decibels is dB = 10 log_{10} (I/I1), where I1 is a reference value called the threshold of hearing intensity. In this equation, it is possible to express the intensity I as a multiple of I1.
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