Struggling With Physics: Units of Periods Needed

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The discussion revolves around a student struggling to understand the concept of periods in physics after missing three weeks of class. The student is seeking clarification on the units of periods needed for homework and equations. It is confirmed that the unit of period, referring to periodic time, is the second. The student expresses frustration over the lack of available help during winter break. Overall, the conversation emphasizes the challenges of catching up in physics without direct support.
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I've just been introduced to wavelengths and so forth in my Physics class but i was out for 3 weeks and I'm basically expected to do all these equations and homework with no help or anything. Can't contract my professor, it's winter break and I've tried researching but i can't find what the Units of Periods are...please help me.
 
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The unit of Period(as in periodic time) is the second
 
thanks
 
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