Physics, 07.04.2021 02:20, ayoismeisalex

What is the speed of a wave with a period of 2.1*10^ -2 sec (0.021 sec ) and a wavelength of 0.5m

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What is the speed of a wave with a period of 2.1*10^ -2 sec (0.021 sec ) and a wavelength of 0.5m...