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In a spectroscopic binary, if a pair shows a combined set of lines tonight, but a maximumsplit two nights later, its orbital period must be:
Weight
A measure of the heaviness of an object, typically defined by the force of gravity on it.
Current Account Deficit
A situation where a country's spending on foreign trade and investment exceeds its income from the export of goods and services.
Foreigners
Individuals from a country other than the one in which they are currently present, often referring to non-citizens or non-natives.
Dollars
The official currency of the United States, also used in other countries as an official or de facto currency.
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