Science task 182: A New Zealand Level 3 learner evaluates evidence and justifies a conclusion in a complex context. A wave has frequency 85 Hz and wavelength 0.9 m. What is its speed?

Science task 182: A New Zealand Level 3 learner evaluates evidence and justifies a conclusion in a complex context. A wave has frequency 85 Hz and wavelength 0.9 m. What is its speed?

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