Q:
# What is the mathematical formula for mass?

A:
### Quick 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.

Credit:
Official U.S. Navy Page
CC-BY-2.0

The formula "mass = density x volume" is a variation on the density formula: density = mass ÷ volume. As long as two of the variables are known, the third can be calculated by rearranging the equation. In order to calculate mass, it is necessary to divide both sides of the density equation by volume.

For example, to find the mass of a liter of milk, it is first necessary to know the density of the milk. If the density is 1.03 g/mL, then according to the equation, the mass of one liter of milk is 1.030 kilograms.

Mass is often confused with weight, although they are two different things. Mass is an unchanging quality of an object. Relativistic mass, however, can increase when an object approaches light speed. It is a measurement of the amount of matter the object has. When a physicist discusses the mass of an object, he or she is is talking about the number of particles in the object, not how much they weigh. Weight, on the other hand, is the force of gravity pulling on a mass. The SI unit of mass, as determined by the International System of Units, is the kilogram.

Density is how much mass there is in a given amount of a material. An object of higher density will weigh more than an object of lower density, even if the objects are the same size.

Learn More-
Q:
## What is the base unit of measure for length in the metric system?

A:

Full Answer >**The meter is the metric system's base unit of length.**Since 1983, the meter has been defined as the distance light travels in 1/299,792,458 of a second. The earliest definition of a meter had it as the one ten-millionth of the distance from the equator to the North Pole.Filed Under: -
Q:
## What is 4,000 meters in feet?

A:

Full Answer >**4,000 meters is equivalent to 13,123.2 feet.**In addition, 1 meter is equivalent to 3.2808 feet. As a point of reference, 4,000 meters is the approximate altitude of the average skydive, affording jumpers around 1 minute of freefall.Filed Under: -
Q:
## What does AMU stand for?

A:

Full Answer >**In physics and chemistry, "AMU" is an abbreviation for atomic mass unit.**Sometimes, it is further abbreviated as "u" for unified atomic mass unit. One AMU is the mass of one-twelfth of an atom of the element carbon, isotope 12, and is equal to 1.661 x 10^-27 kilograms.Filed Under: -
Q:
## What is 174 pounds in kilograms?

A:

Full Answer >**An object weighing 174 pounds is equal to just over 79 kilograms.**The conversion rate between kilograms and pounds is 2.2. This means that the weight of any object expressed in pounds can be converted to kilograms by dividing its weight by 2.2.Filed Under: