Question

what do you mean by second?​

Answer 1

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Second is the base unit of time in the International System of Units [(SI) - French: Système International d'unités], commonly understood and historically defined as ${\frac{1}{86400}}$of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally

Answer 2

Answer:

there are two types of second :

• time ( 1 min = 60 second)
• numerical second( first , second , third..........etc )