Which of the following is true for sound waves? They require a medium
They are unrelated to vibrations.
They can travel in a vacuum
They cannot travel through liquids
None of the above

Explanation:

Answer

λ α

f

1

Wave velocity = Wavelength × Frequency

Thus, we can say that wavelength is inversely proportional to the frequency.

FALSE - Only electromagnetic waves can travel through a vacuum; mechanical waves such as sound waves require a particle-interaction to transport their energy. There are no particles in a vacuum.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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