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# Lesson Parts

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# Waves, sound and light

## Physics

After this lesson, you should be able to:

• Define a transverse wave as a periodic succession of transverse pulses
• Define wavelength, frequency, period, crest and trough of a wave
• Explain the wave concepts “in phase” and “out of phase”
• Identify points on a snapshot of a wave which are either in phase or out of phase
• Know the link between frequency and period of a wave
• Define wave speed (v = f $$\lambda$$)
• Use the wave equation to solve problems on transverse waves

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