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Q: A: ### Quick Answer

**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).

Since 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.

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## What is the mathematical formula for mass?

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Full Answer >**The mathematical formula for mass is mass = density x volume.**To calculate the mass of an object, you must first know its density and its volume.Filed Under: - Q:
## How do you find the volume of a shape?

A: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.

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## How do you convert 85 mph to kph?

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Full Answer >**To convert 85 mph to kph, you first need to convert miles to kilometers, and then multiply 85 by the ratio of miles to kilometers**When multiplied out via the conversion process, 85 mph is equal to 136.765 kph.Filed Under: - Q:
## What is total magnification?

A:Magnification is the ratio between an object's apparent size, usually seen through some sort of lens apparatus, and the object's actual size. Total magnification refers to the amount of magnification an apparatus has when taking all of the optics involved in the apparatus into account.

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