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Is it true that dimensional analysis can tell whether an equation is physically correct?
Wiki User
∙ 11y ago
- yes
Wiki User
∙ 11y ago
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Why cant dimensional analysis be used to determine if a given equation is correct?
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!
A dimensionally incorrect equation may be correct?
no it can't be
What is the equation of 7 to the negative 2 power as a positive?
7-2 IS positive. You do not need an equation for it. And if it were not positive, no correct equation would show it to be positive.
There are 216 inches in 18 ft?
The equation above is correct.
What is the error analysis?
It is when an operation is wrong and you have to find the mistake and correct and get the right answer
Why cant dimensional analysis be used to determine if a given equation is correct?
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!
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.
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.
What is the politically correct word for physically disabled?
physically challenged
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.
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.
What is the correct set of coefficients for the equation below?
2111.Equation coefficients are needed to write a correct chemical equation
How do you convert mm into in?
By multiplying the number in mm by 0.254. Correct Answer: Algebraic Steps / Dimensional Analysis Formula ____ mm*1 cm 10 mm*1 in 2.54 cm=? in Direct Conversion Formula ____ mm*1 in 25.4 mm=? in
