mfrn19781 mfrn19781
  • 12-09-2022
  • Chemistry
contestada

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All of the following devices transmit energy/information: cell phones, walkie talkies, remote controls, and sunlight.
Which statement is true regarding these transmissions?
A
B
C
D
They are all radiation.
They are all invisible.
They are all pressure waves.
They all travel at different speeds.
4
C

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