how are the units for physical constants determined?

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It seems like the units for the constants are determined just by cancelling units in the equation that aren’t wanted in the answer. This seems unscientific to me though so it feels like there must be a more thorough way

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Anonymous 0 Comments

They’re determined by figuring how much the numerical value change if we change our basic units of measurement.

For example, imagine if we change all measurement to km from m, if the numerical value of the constant decrease by a factor of 1000000 then it must have the unit of length squared.

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