What Are the Units When e Is Raised to a Power with Mass?

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Discussion Overview

The discussion centers around the question of what units result when the mathematical constant e is raised to a power that includes units of mass. Participants explore the implications of dimensional analysis in this context, particularly focusing on the requirement for the exponent to be dimensionless.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant asserts that e can only be raised to a dimensionless quantity, implying that if mass is present in the exponent, it must be accompanied by terms that result in a dimensionless expression.
  • Another participant suggests that there may be a constant missing from the formula that could clarify the situation.
  • A participant expresses confusion about how to handle the units when mass is involved in the exponent, indicating a desire to understand the treatment of a single unit before addressing a more complex formula.
  • One participant mentions working with various units (kg, Js, meters, seconds) and considers converting mass into electronvolts (eV) to achieve a unitless exponent.

Areas of Agreement / Disagreement

Participants generally agree on the principle that the argument of an exponential must be dimensionless. However, there are competing views regarding how to achieve this when mass is involved, and the discussion remains unresolved regarding the specifics of the units after calculation.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the relationships between different units and the potential need for additional constants to achieve a dimensionless exponent.

bluestar
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When e is raised to a power with units of mass what is the units of the resulting solution?
 
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e^{mass}. But more likely, there's a constant missing from your formula.
 
It can never be done that way. e, or any other constant, can only be raised to a dimensionless quantity. So, if you find a mass term in the exponent, there must also be one or more terms together having a dimension of M-1, and vice versa.
 
bluestar said:
When e is raised to a power with units of mass what is the units of the resulting solution?
In dimensional analysis, the argument of an exponential must be dimensionless. In other words the argument of an exponential cannot have any units associated with it.

Edit: I see that I have been beaten to it.
 
I have simplified the example because the actual formula has e raised to multiple units. I thought if I could understand how a single unit is handled then I could figure out all of the units would be handled in the actual formula.

The unit mass is associated with a numerical value so e^mass can be computed. I just don’t understand what the units would be after the calculation.
 
bluestar said:
I have simplified the example because the actual formula has e raised to multiple units.
What, praty tell, is the unit on the exponent (in its entirety)?
 
I have been working in kg, Js, and meter, seconds. I think I can change kg into eV and then into Js and perhaps I can arrive at a unitless exponent.

Thanks for the guidance.
RON
 

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