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Electromagnetic radiation with a frequency of 8.6* 1014 Hz incident on an unknown metal surface causes the ejection of photoelectrons with kinetic energies of 2.8 *10-19 J.What is the unknown metal?
Factory Depreciation
The decrease in value of manufacturing equipment and facilities over time due to wear and tear or obsolescence.
Return on Investment
A performance measure used to evaluate the efficiency of an investment or compare the efficiency of multiple investments.
Controllable Margin
Controllable Margin refers to the portion of profit or income that can be directly influenced by managerial decisions, excluding fixed costs and uncontrollable factors.
Investment Center
A division or unit within an organization that has control over its revenue, expenses, and invested capital, and is responsible for its profit and investment decisions.
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