.12 A series of water waves travels with the frequency of 30 Hz. The distance measured from the first to fifth adjacent crests is 40 cm. What is the speed of the waves? * 1)6
2)3

the assestment will probley apele with cause and effect

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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