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The number of wave troughs that pass by every second is a wave's _________. a. period b. amplitude c. frequency d. wavelength
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The number of wave troughs that pass by every second is a wave's _________.

a. period
b. amplitude
c. frequency
d. wavelength

User Mcphersonjr
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A waves frequency (in Hertz) is how many crests pass by a point per second. easily confused with period, which is the amount of time it takes for a full wave to pass by a certain point 
User Sage
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