Can a Homogeneous Equation Still Be Incorrect?

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A homogeneous equation can appear correct in terms of its units but still be incorrect if it does not accurately model the intended system. The discussion highlights the importance of context and the need for equations to align with physical realities. An example is requested to clarify the concept further. The conversation emphasizes that many equations may be mathematically valid yet fail to represent the actual phenomena they are intended to describe. Understanding the relationship between homogeneity and correctness in equations is crucial for accurate modeling.
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How is it possible that an equation shown to be homogeneous with respect to its unit may still be incorrect .
 
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welcome to pf!

hi talhakhan! welcome to pf! :wink:

not following you :confused:

can you give an example? :smile:​
 
this is the whole question explain how an equation show to be homogeneous with respect to its unit, may still be incorrect . i saw this in an edexcel book at first i didnt even get what the question was asking .
 
You can write down a lot of equations, most of them will not describe the system you try to model.
But that is not really useful :confused:. Do you have any context of this question?
 

Thread 'The Physics of unloading sand from a barge'

I think it's easist first to watch a short vidio clip I find these videos very relaxing to watch .. I got to thinking is this being done in the most efficient way? The sand has to be suspended in the water to move it to the outlet ... The faster the water , the more turbulance and the sand stays suspended, so it seems to me the rule of thumb is the hose be aimed towards the outlet at all times .. Many times the workers hit the sand directly which will greatly reduce the water...
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