##### A quick Physics Question? about Waves

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A transverse wave is found to have a distance of 9 cm from a trough to a crest, a frequency of 12 Hz, and a distance of 9 cm from a crest to the nearest trough. Determine the amplitude, period, and wavelength of such a wave.

Wavelength =18cm

We start with a wave length, 1 cycle. It has three nodes and two anti nodes. One anti node is called the crest and the other is the trough. They are 1/2 cycle apart. So a full cycle, 1 wavelength, is 18 cm.

Can't do the amplitude, not enough info. You gave us crest to trough twice, I suspect one of those should have been amplitude info.

And as the length of a wave is 1 cycle, 12 lengths per second is the frequency. And 1/12 = seconds/length is the time the wave takes to travel that one cycle. We can write this as T = 1/F for the period.

Thank you for helping me but this is how it appears in the text book. Im not sure what to do.

**Sorry but I can give you the full answer**

**Period = 1/frequency So Period = 1/12 = 0.0833**

**Amplitude =D/f So 9/12 **

**Wavelength=18**

**We start with a wave length, 1 cycle. It has three nodes and two anti nodes. One anti node is called the crest and the other is the trough. They are 1/2 cycle apart. So a full cycle, 1 wavelength, is 18 cm. **

**Where D is the distance traveled by the wave and F is the frequency of the wave.**

**//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////**

**Period refers to the time which it takes to do something.**

**When an event occurs repeatedly, then we say that the event is periodic and refer to the time for the event to repeat itself as the period. **

**The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. **

**Period, being a time, is measured in units of time such as seconds, hours, days or years. **

http://isites.harvard.edu/fs/docs/icb.topic86897.files/October_16_Waves/waves_tutorial.pdf

**AMPLITUDE = D/f**

**Where D is the distance traveled by the wave and F is the frequency of the wave.**

**The amplitude of a wave refers to the maximum amount of displacement of a a particle on the medium from its rest position.**

**The maximum height observed in the wave is called as Amplitude. **

**It is denoted by A and is given in decibels (dB)**

**Wavelength**

**The wavelength of a wave is simply the length of one complete wave cycle. **

**reference**

**http://formulas.tutorvista.com/physics/amplitude-formula.html**

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