What materials were necessary for the experiment?
Generator of frequency signal, loudspeaker, and two bases.
Generator of frequency signal, louds...
What materials were necessary for the experiment?
Generator of frequency signal, loudspeaker, and two bases. Generator of frequency signal, loudspeaker, and tube sonorous. Tube sonorous, loudspeaker, and two bases. Generator of frequency signal, tube sonorous, and two bases.
Os materiais necessários para o experimento são: gerador de sinal de frequência, alto-falante e duas bases. A alternativa correta é a primeira: "Generator of frequency signal, loudspeaker, and two bases."
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