isiahamccoy2149
08.11.2019 •
Chemistry
Which of these best describes frequency?
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Ответ:
answer:
mark me brainiest
explanation:
frequency is the number of occurrence of a repeating event per unit of time it is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. the period is the duration of time of one cycle in repeating event, so the period is the reciprocal of the frequency.
Ответ:
Criteria for the implementation of drinking water:
where drinking water comes from and its qualitytechnical interventionhygiene education for communityregulations, laws and managementsroutine water sampling and analysisLimitations:
availability of resources (human, finance, equipment)geographical conditionsclimatological conditionscommunity and authority and transport infrastructureExplanation:
For more information:
https://www.who.int/water_sanitation_health/dwq/gdwqvol32ed.pdf?ua=1https://www3.epa.gov/region1/eco/drinkwater/your_drinkwater_source.html