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The reason there are two slits, rather than one, in a Young's experiment is:
Marginal Cost
The spending necessary to produce an extra unit of a product or service.
Intellectual Property
Legal rights that result from intellectual activity in the industrial, scientific, literary, and artistic fields.
Life Cycle
The series of stages through which something (such as a living being, a product, or a project) goes from its beginning to its end.
Supply Curve
a graphical representation showing how the quantity supplied of a good or service varies with its price.
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