Chemistry, 20.01.2021 22:10 MathWizz5104

Draw a diagram showing the movement of the waves as they travel from the H-E-L-P device to warn the lady that there is a door in front of her. How would you describe the waves?

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Draw a diagram showing the movement of the waves as they travel from the H-E-L-P device to warn the

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Draw a diagram showing the movement of the waves as they travel from the H-E-L-P device to warn the...