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What is the energy (in electron-volts) of the n = 3 state of atomic hydrogen?
Performance Rating
An assessment of an individual's or machine's productivity level, often compared against a standard to gauge efficiency.
Observed Time
The actual amount of time measured for a task or process to be completed, as opposed to estimated or standard time.
Allowance Factor
A coefficient applied to account for uncertainties, variations, or additional capacity in calculations or designs.
Standard Time
The pre-determined time allowed for the completion of a specific task, under normal working conditions.
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