topic Re: Different values for same computation in Mathcad

Different values for same computation

ajay94_shan — Mon, 25 Nov 2024 14:09:03 GMT

For s=10*10^-9 and T =293, I obtain two different values of V_mag. Why? The mcdx file is attached herewith. pls help. I know the correct answer is -0.261 for V_mag. I wanna plot V_mag/k*T with s later on.

Re: Different values for same computation

Werner_E — Mon, 25 Nov 2024 17:27:26 GMT

Your sheet is too chaotic for me.

Could you clean it up an show exactly side by side where you get different results you don't expect?

Different results may mean using different input values and I notice that the value of M (4.8*10^5) which is disabled on the left hand side is quite different from M(293)=92 which you use on the right hand side ...

Re: Different values for same computation

ppal — Mon, 25 Nov 2024 21:37:59 GMT

Is this what you want

Re: Different values for same computation

LucMeekes — Mon, 25 Nov 2024 22:35:59 GMT

You should:

- Clean up your worksheet and state clearly (by showing side-by-side) what the difference is you see.

- State what version of Prime you are using.

- Know that Boltzmann constant and vacuum permeability are in the list of known constants in Prime (Check the constants in the section of Operators and symbols on the ribbon) :

Success!
Luc

Re: Different values for same computation

Catalina — Fri, 29 Nov 2024 09:34:13 GMT

Hi @ajay94_shan ,

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution or please feel free to detail in a reply what has helped you and mark it as the Accepted Solution. It will help other members who may have the same question.
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Thanks,