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Mar 8, 2019 at 3:38 answer added user45664 timeline score: 2
Mar 7, 2019 at 18:33 comment added Steeven The two in-phase waves cause a doubled displacement. Because their contributions add together. In the same way, two forces in the same direction cause a doubled push. Their contributions are added together. Likewise, two out-of-phase waves as well as two oppositely directed forces cancel each other out. It seems quite equivalent - for both force and wave, their effect applies regardless of other forces or waves acting at the same time.
Mar 7, 2019 at 18:25 history asked user222267 CC BY-SA 4.0