In addition, the role, scope of practice, and prescribing authorization of a nurse midwife will vary depending on licensure and where they practice. Certified Nurse Midwife responsibilities may include: 1  Primary and specialty care for women.
Messages: 357. Slack tide is when the current goes slack between tide changes and slack usually last 30min to an hour after peak high tide or peak low tide(hence high slack or low slack). Feb 27, 2008.
Incidentally, the tide is bi-diurnal, i.e. twice a day. That's again because of the harmonic phase of the pull then release of the gravitational field. The time between two high tides is roughly 12 hours and 25 minutes. The 25 minutes is due to the advance the moon does in one revolution of 29 days. So, the closest answer is A but it is not the real answer because the full moon sees an equally important spring tide.