Sciencing: Making Science Fun For All Ages
Whether you have questions about the universe or a molecule compound or what biome you live in, Sciencing.com is your go-to source for all things science.
Actived: Thursday Jul 2, 2020
How to Do Discount Math Problems | Sciencing
To illustrate this principle, here is an example: to take 1/3 off $36.00, divide 36 by 3 and multiply by 1. This becomes 36/3 x 1 to equal 12, which represents a discount of $12.00. To get the actual discounted price, subtract 12 from 36, in other words, 36 minus 12 to equal 24.
How to Calculate Percent Off | Sciencing
Imagine that you've seen a blazer in the shop window that originally sold for $90, but now it's on sale for 30 percent off. Calculate the Percent Remaining After Discount Subtract the percentage of the discount from 100; the amount left over will represent what remains of the original price after you've taken away the discount.
How to Figure Discount Percentages | Sciencing
Note that discounts are usually taken off of the order price BEFORE taxes are added. (15% off of a $203.19 order before taxes) Convert discount percentage to a decimal by dividing by 100. (15% / 100 = .15) Multiply the number or price, which the discount will be taken off, by the number derived in Step 2. (203.19 x .15 = 30.4785)
What Is Vacuum Pump Oil? | Sciencing
If you use a vacuum pump, you need to familiarize yourself with its oil. Each pump type has its own requirements for oil, and the oil needs to be inspected and periodically replaced. These oils come in hydrocarbon, silicone and other varieties specially formulated for vacuum applications.
The Effects of Acid on Different Kinds of Metal | Sciencing
Iron is fairly reactive; in moist air. it oxidizes to form rust, a mixture of iron oxides. Oxidizing acids like nitric acid react with iron to form a passivating layer on the surface of the iron; this passivating layer protects the iron underneath from further attack by the acid, although the brittle oxides of the layer can flake off and leave the interior metal exposed.