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A simple electrical circuit contains a source of voltage (a power supply, such as a battery, generator or the utility wires coming into your building), a wire to carry current in the form of electrons, and a source of electrical…
Acres and square footage are terms that are applied to the area of a piece of land. These measurements are extremely important when buying or selling a piece of property. You also may have to measure acres or feet if…
Fractions can take two forms, and whichever form you use, you can use your calculator or your notepad to find two-thirds of a number. For example, you can write two-thirds in fractional form – 2/3 – or as a decimal…
Although people often ignore it because they do not fully understand it, the percent key on a calculator can be an invaluable tool. When you wish to figure out what a specific percentage is of another number or a number…
You may encounter situations in which you have a three-dimensional solid shape and need to figure out the area of an imaginary plane inserted through the shape and having borders defined by the boundaries of the solid. For example, if…
The creatures that roam the deepest parts of the ocean, known as the _hadal zone or hadopelagic zone_, are largely a mystery to humans. It’s only recently that we’ve developed technology that allows us to plunge miles beneath the surface…
Writing 33 percent as a fraction requires a basic knowledge of fraction and percentage conversion. A fraction represents an amount relative to a whole. With percentages, the same concept applies, with 100 designated as the whole. Checking your work requires…
Ladybugs, also known as ladybird beetles or lady beetles, belong to the Coccinellidae family of beetles. They are not, as their common name suggests, all female beetles. These cheerfully vibrant, orange- to red-hued, spotted little beetles are known for their…
Uppercase “E” stands for “exponent” in calculator displays. Calculator manufacturers use it to display numbers in scientific notation because the longhand version is difficult to display and would be even more difficult to read. To complicate matters, some calculator manufacturers…
While the United States still relies heavily on the imperial system of measurement, which measures mass in pounds and ounces and height in feet and inches, most other countries use the metric system, which measures mass in kilograms and grams…
