Physical Address
Suite 5, 181 High Street,
Willoughby North NSW 2068
A simple way for remembering a percentage is that it shows a part of the whole. Cumulative percentages add a percentage from one period to the percentage of another period. This calculation is important in statistics because it shows how…
In physics, when you work on velocity problems, you break the motion into two components, vertical and horizontal. You use vertical velocity for problems that include an angle of trajectory. Horizontal velocity becomes important for objects moving in a horizontal…
When analyzing solutions, chemists measure concentrations of components in moles. The mole fraction of a solute is the ratio of the number of moles of that solute to the total number of moles of solute and solvent in solution. Because…
You probably think of a radius as a property of a circle in two dimensions or of a three-dimensional sphere. However, mathematicians also use the term to refer to certain distances in regular polygons. In more casual use, radius of…
The U.S. customary units – that is, the units of measure commonly used in the United States – have four options for length: inches, feet, yards and miles. If you want to measure the area (or two-dimensional space) taken up…
Every atom has a certain number of protons, electrons and neutrons. Protons carry a positive charge, electrons carry a negative charge and neutrons do not carry a charge. Protons and neutrons make up the nucleus or central part of the…
The porcupine and hedgehog are prickly mammals. They are often confused because they both have sharp, needle-like quills on their body. However, that’s about the only similarity between the two animals. Porcupines and hedgehogs differ in size, defensive behavior, diet…
Microbiology studies microscopic organisms and needs ways to distinguish different types visually. Microbiologists use staining procedures that add color to different types of organisms. These stains are chemicals that are of different colors, but these chemicals do not themselves stick…
Logarithms have proven to be a frequent sticking point for math students over the years. Often, they are part of these students’ introduction to the world of exponents. Many of the concepts aren’t intuitive and don’t necessarily follow from anything…
Fractions express numbers that are part of a whole typically written numerically, but when you need to write them as words, spell the numbers out and use a dash between the two numerical elements such as five-eighths for 5 Fractions…
