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Which of these statements is NOT true?

Which of these statements is NOT true?

Sound waves and electromagnetic waves are both needed to talk on a cell phone.

Sound waves are faster than light waves when traveling through the air.

Sound waves need a medium, but electromagnetic waves can travel in a vacuum.

You can hear sound waves, but you cannot hear radio waves.

Respuesta :

Answer:

Sound waves are faster than light waves when traveling through the air.

(This statement is NOT true)

or

Sound waves and electromagnetic waves are both needed to talk on a cell phone

Explanation:

Sound waves need a medium to travel through, but light does not.

Also, the statement "Sound waves and electromagnetic waves are both needed to talk on a cell phone" might also be NOT true, since, as far as I know, cellphone calls need radio and sound waves, not electromagnetic waves.

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