MediumPhysicsHigh School (11–12)Waves & Sound › Oscillations and Simple Harmonic MotionNumericalBoard ExamAEEE (Amrita)AMUEEEAP EAPCETBCECECOMEDK UGET
At a sea port, the time from one high tide to the next is 12 hours 25 minutes…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
At a sea port, the time from one high tide to the next is hours minutes. Treat the tide as periodic. Find its period in seconds and its frequency in hertz. About how many high tides come in one day?
Need a reminder? The key ideaShow
A periodic motion repeats after a fixed time, the period . An oscillation is a periodic motion to and fro about a mean position. The frequency is , in hertz (Hz).
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Period. .
Step 2. Frequency. .
Step 3. Each day. .
Answer: , , and about high tides each day. That is why the high tide comes about minutes later each day.
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