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allsm [11]
3 years ago
9

Please......... I need desperate help

Physics
1 answer:
PIT_PIT [208]3 years ago
3 0
' A ' is one crest of the wave.  After every wavelength, there's another one.

' B ' . . . the vertical arrow under B shows the amplitude of the wave

' C ' is one trough of the wave.  After every wavelength, there's another one.

' D ' . . . the horizontal arrow over D shows the wavelength.
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