Science task 192: A New Zealand Level 3 learner evaluates evidence and justifies a conclusion in a complex context. A wave has frequency 90 Hz and wavelength 0.5 m. What is its speed?

Science task 192: A New Zealand Level 3 learner evaluates evidence and justifies a conclusion in a complex context. A wave has frequency 90 Hz and wavelength 0.5 m. What is its speed?

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