In Chemistry weight of some elements are measure in the form of Average Atomic Mass. Isotopes are found in different abundances in nature. Certain elements have many isotopes and certain elements have few isotopes. Regardless of the number of the natural isotopes, the weighted average mass takes into consideration not only the mass of each isotope, but what also its natural abundance in terms of percent as found in the nature. So when you have the mass of two isotopes of an element and are gi...
New to Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 274th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate various probabilities for a binomial distribution when there are additional complicating factors. This is accomplished with recourse to Excel's BINOMDIST, NORMSDIST, SUMIF, SUM, INDEX and MATCH functions. See also how to create th...
New to Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 248th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the PERCENTILE and QUARTILE functions to calculate percentiles, quartiles and deciles in basic statistics.
In this video you learn how to make a digital pinhole camera. The video begins with an introduction addressing the main themes to be dealt with in the video - tight budgets, photography and specialized lenses. In this video, Kai modifies a photo lens cap by poking a large hole in it. After making this large hole, he makes a smaller hole in a thinner material and lines the hole up in the center. He calculates the size of the hole he needs based on the wavelength he will be photographing. He us...
Need a new prank or trick to play on your friends? Well this video is your solution. All you need a non-transitive dice and to follow this video and you will be cheating your friend in no time. The idea behind this video is to use dice that are non standard, which means instead of having from 1 to 6 on the sides, they have other numbers. By playing with what numbers go on the faces, the viewers can skew with the probabilities of what number comes up. With this idea, the viewers can make dice ...
Ever wonder how to measure the height of a building, without using a tape measure? Well, this crazy science experiment will show you how. Just watch and you'll see how to measure the height of a building with a CRT monitor, gravity and math.
The multiple award-winning card game Sixteen is packed with head-to-head action. If you can you count to 16 and take calculated risks, then you can force your opponent to bust. But play your cards defensively at the right time or the tables will turn! Win the most sets and you'll win the game. It sounds simple (and it is), but Sixteen's unique strategy and cribbage-like counting will hold the attention of even the most seasoned game players.
The first video introduces the basic electrical quantities of charge, current, voltage, and resistance. The concept of quantities and units is explained. The units of Coulombs, Volts, Amperes, and Ohms are described. The three basic formulas of Ohm's Law (E=IR, I=E/R and R=E/I) are also introduced.
The concept of percentages may be a bit difficult to grasp for some beginner level learners. This video attempts to explain the concept of percentages in an easy to understand way.
In this video, Daddy Troy teaches us how to star gaze with your kids. This can get your kids interested in space and teach them a thing or two, while still having a good time. First, Google offers a service called Google Earth, which will show your child the entire earth, moon, and mars. Kids can use these programs just like a video game. They can see real pictures as well as their own home or grandma's home. This is free and a lot of fun! Next, you can see satellites with your naked eye in t...
As you might guess, one of the domains in which Microsoft Excel really excels is finance math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 11th installment in his "Excel Finance Class" series of free video lessons, you'll learn how to calculate asset turnover, capital intensity, inventory turnover, days to sell inventory, receivable turnover, days to collect accounts receivab...
The discriminate of any equation in any degree plays an important role in determining the roots of that equation.
From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate unknowns in proportions in algebra.
Learn how to calculate BPM for different types of DNB. While DJing might appear simple to the untrained eye, truly mastering the turntables requires as much time and dedication as mastering any other instrument. Fortunately, the internet is awash in free video DJing lessons like this one, which make the learning process easier than it's ever been. For more information, including detailed, step-by-step instructions,
From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the probability of two dependent events in statistics.
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 611th installment in their series of digital spreadsheet magic tricks, you'll learn how to create an array formula to summarize year over year sales using the SUMPRODUCT and YEAR functions. Also see how to calculate a formula for percentage change.
Could you use a little help figuring out how to find an unknown angle in a paralellogram? Watch this free video geometry lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this free math tutorial, you'll learn how to calculate a missing angle in ...
Need to calculate the area between two curves? This free video lesson will show you how. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how...
Need help figuring out how to calculate indefinite integrals or antiderivatives in calculus? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn...
Want to know how to use the product rule to calculate derivatives in calculus? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find d...
Learn how to use trigonometric functions to calculate the sides of a right triangle. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to ...
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun and Mr. Excel, the 43rd installment in their joint series of digital spreadsheet magic tricks, you'll learn how to calculate weighted average cost ending inventory value from transactional records on 2 different sheets using the COUNTIF, SUMIF and SUMPRODUCT functions.
Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you're in the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 11th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to transform bad data into useful data using formulas and text functions such as TRIM, PROPER, SUBSTITUTE, REPLACE, FIND and LEFT. Also see how to use the ampersan...
As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 50th installment in his "Excel Business Math" series of free video lessons, you'll learn how to make calculations for markup on selling price in MS Excel.
Love Microsoft Excel? This clip contains a tip that just might induce you to. With this free video tutorial from ExcelIsFun, the 70th installment of his "YouTubers Love Excel" or YTLE series of free video MS Excel lessons, you'll learn how to clean up a bad data set with the TRIM function before building a pivot table (PivotTable) to calculate an average. Learn to love digital spreadsheets more perfectly with the tricks outlined in this free Microsoft Office how-to.
New to Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 194th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the SUM, VLOOKUP and ROUND functions to create a gradebook based on percentage scores that will calculate grade for you automatically. See also how the VLOOKUP and the percentage format can deliver the wrong grade when you dont use the ...
Watch Southwest Lawn and Garden's John white and Dr. Bernd Leinauer Discuss the importance of Bermuda grass lawn fertilization and the correct techniques involved. You'll learn how to interpret the meaning behind the fertilizer label, and why a complete fertilizer, including nitrogen, phosphorus and Potassium. Along with how to calculate much fertilizer to use per square foot, You'll learn how each important nutrient helps your lawn, and why having the correct balance is so important. Most im...
The guy first gives the definition of differential equations. He explains that a differential equation is an equation that contains the derivatives of an unknown function. He then gives some examples of differential equation and explains what the equation's order means. After that he gives an example on how to solve a simple equation. He calculates it and gives examples of graphs. Then he explains what a general solution is and how to narrow down the number of solutions using data from the pr...
New to Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. With this video tutorial from ExcelIsFun, the 329th installment in their series of digital spreadsheet video tutorials, you'll learn how to create a frequency table. Then see how to calculate the midpoint of each category and make a frequency polygon with two or more lines (two or more data sets).
New to Excel? Looking for a tip? How about a tip so mind-blowingly advanced as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 480th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate a percentage of total from a database data set when the variable of interest is text (word). This is accomplished with recourse to the COUNTIF, SUM & COUNTA functions.
New to Excel? Looking for a tip? How about a tip so mind-blowingly advanced as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 533rd installment in their series of digital spreadsheet magic tricks, you'll learn how to create a formula to calculate the difference between start date/time & end date/time excluding holidays and weekends. This is accomplished with recourse to Excel's NETWORKINGDAYS and MOD functions.
Open Microsoft Office Excel. Across the top notice letters (columns), along the sides are numbers (rows). The columns and rows can be extended by highlighting sections and right clicking and choosing the high of the row. You can also select to add a border, and change the orientation of your cells.
In this video the tutor shows how to calculate the area of a rhombus. He gives the formula for the area of a rhombus as area a = ( D * d ) / 2 where D is the length of the longer diagonal and d is the length of the shorter diagonal. He shows how to solve such problems by taking an example of rhombus with lengths of longer and shorted diagonal and computes its area by substituting the values in the area formula. This video shows how to compute the area of a rhombus when the lengths of its long...
An educational video from free math tutoring that shows an easy way to calculate differences of temperature. Many times people commit simple mistakes in subtracting temperatures that lead to illogical results. This video explains a very common pitfall and at the same time, clears up an important concept in temperature subtraction.
This video is about how to learn how to calculate what key to play a piece of music in. The instructor tells you that you need to know two things: how to read music notes and how understand the Circle of Fifths. Putting together these two layers of knowledge you can figure out what possible keys the music can be in. You can normally narrow down your possibility to two choices. Normally, the key to choose correlates with the last note in the music.
In this video the instructor talks about compound and continuous interest formula calculations. You need to understand the concepts of simple and compound interest. Only then you can understand what the bank is doing to your money which are in your bank account. Simple interest is a method where when returning a borrowed sum to some one you pay additional price for using the money all this time. Compound interest is a similar concept where you pay interest on the original sum borrowed, and al...
In this tutorial the instructor shows a method to compute the interior angle sum of a polygon. He gives us the formula for the interior angle sum of a convex polygon as (n-2) * 180 where n is the number of sides of the polygon. He goes and take a 6 sided polygon as an example and does the math by substituting the value of 'n' in the equation and arrives at the result. This video clearly gives the formula and demonstrates with an example of how to calculate the sum of interior angles of a poly...
From the people who brought you the Dummies instructional book series, brings you the same non-intimidating guides in video form. This is Mathematics for Dummies. Just watch this video tutorial to learn how to find the volume of a solid with a circular cross-section, For Dummies.
If you think that card counting is only a thing in the movies then think again. You too can try a couple of methods to help you count cards. Like anything, the more you work on it the better you will be.
It’s time for science. You are able to calculate the molar mass for a compound using the periodic table and the amount of compound involved. You might need to know this in your everyday life but you will definitely need this in a chemistry class.
