# Applied Mathematics

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### How to Estimate the Natural Log By Hand (Without Tables or Calculators)

Before calculators became widely available, people estimated natural logarithms (log base e) using log tables. For a typical log table the input values are incremented by 0.1, so you have to use linear interpolation to...

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### How to Calculate The Capacity of Water Tank And Construct Any Shape of Tank For A Specific Capacity

Generally water is stored either in a cylindrical tank or in a square tank. We can easily find out the capacity of water storage tank of any size in liters. For eg. if you want to find out the capacity of a square water...

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### Using the Minkowski Diagram

How both the observer and the object see a linear contraction of the other How the observer and the object measure time dilation in other system The speed of light as measured in both systems Each coordinate...

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### Best Calculators for the FE Exam -- Fundamentals of Engineering

The Fundamentals of Exam Exam (FE Exam) is administered by the National Council of Examiners for Engineering and Surveying (NCEES), and passing this standardized test is one of the first steps in earning a Professional...

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### More Ratio and Proportion Example Problems Worked Out

This article adds several more examples the previous article Ratios and Proportions. These solved example problems with full solutions and explanations will help you solve similar problems in the real world or on a...

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### Importance of Basic Mathematics

Mathematics is the study of numbers, and counting, and measuring, but that is only the beginning. Mathematics involves the study of number patterns and relationships, too. It is also a way to communicate ideas, and...

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### Applied Mathematics: aircraft landing process

Applied Mathematics in the analysis of aircraft landing process. Civil Engineers use basic kinematics to calculate the length of runway for landing aircraft. The elegant process is explored.

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### Surveying Math: How to Calculate the Percent Grade of a Slope or Incline

An incline's grade (aka slope, gradient, or pitch) is the ratio of the change in elevation to the change in horizontal distance. Surveyors can compute topographic grade as a either a simple ratio or percent using...

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### Converting Liters to Milliliters

In America, metric measurements are no tthe usual system of measurement, though the metric measurements are showing up more and more. It's always helpful, therefore, to have a refresher course.

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### Calculate Tree Height With Shadows

The shadow ratio method is one of the oldest and easiest methods to measure the height of a tree; all that is required is a measuring tape and a little math. This technique gives you the height of a tree using the...

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