A fisherman sees 7 wave crests go by in 10.0 s. The crests are
2.43 m apart. Find the period
of the wave.
(Unit = s)

What are similarities and differences between refraction, reflection, diffraction and absorption?

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

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