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Dimensional analysis simply ensures that two sides of an equation have the same dimensions. By "dimensions" I mean quantities like distance, pressure, force, time, electric charge, etc. For example, a distance can not equal a time. So, if the dimensions are wrong, the equation is wrong, but if the dimensions are right, the equation may be right or it may be wrong. Getting the dimensions right is only part of the task!

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Q: Why cant dimensional analysis be used to determine if a given equation is correct?
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Is it true that dimensional analysis can tell whether an equation is physically correct?


How can you tell if an equation is dimensionally correct?

You do the calculations, not with actual numbers, but with dimensions. For example, [length] + [length] = [length], [length] x [length] = [length]2, square root of [time]4 = [time]2, etc. In the final result, left and right of the equation have to be equal. For more information, search about dimensional analysis (for example, the Wikipedia article on dimensional analysis might help).

What are the used of dimensional equation?

A dimensional check in an equation can provide a quick check about the possible correctness of the equation. For example, if you are supposed to calculate a speed, the dimensions of the result MUST be of the form [distance] / [time] (or something that you can simplify to distance/time). If it doesn't, the formula is wrong. If it does, it MIGHT be correct.

How do you solve the equation y plus 3 equals 5x?

You need another equation to make this a linear equation so you can solve for both variables. One equation with two variables is not enough to determine the correct answer.

When doing dimensional analysis when do you round to the correct number of significant figures?

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

How do you determine the empirical formula of a metal oxide?

First it is necessary a correct chemical analysis of this compond, with the goal to establish the empirical chemical composition.

How do you spell dimensinel?

The correct spelling is "dimensional."

Which is the correct set of coefficient for the equation below?

The correct set of coefficient for an equation depends with the equation in question. There are many types of equations.

A determine what problems exist and how to correct them?

to determine what problem exist and how to correct them

How do you use one demensinal in a sentence?

The correct spelling is one dimensional. A drawing on a piece of paper is one dimensional.

What is mathematically complete?

if an equation is given the correct answer, it is mathematically correct.

Is it correct to calculate the standard deviation using duplicate analysis?

No it is not correct.