Hans observed properties of four different waves and recorded observations about each one in his chart.
2 answers:
D.<span>Wave 3 resulted from constructive interference, and Wave 4 resulted from destructive interference.
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i think it is d, because wave w is being diffracted wave x is being reflected, and wave y and z are being refracted.
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The kinetic energy is given by:

We know the mass and the maximum speed, plugging their values in the expression above we have:

Therefore, the answer is d.
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it is biology i think
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Neither A or B
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