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Physics > 4th Form End Of Years > Flashcards

4th Form End Of Years Flashcards

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1
Q

Why can’t sound travel through a vacuum

A

Because there are no particles to carry the vibrations

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2
Q

Speed of sound in air

A

340 m/s

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3
Q

What is ultrasound

A

Any sound with a frequency higher than 20,000 Hz

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4
Q

2 uses of ultrasound

A
  • breaking kidney stones
  • foetal scanning
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Physics (13 decks)

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