Assertion: tuning fork's frequency | /r/HasProperty | 440 hz
Facets:
Source sentences:
text: When properly tuned, the note A should have the frequency 440 Hz} and the note E should be at 659
text: physics 15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same time.
text: Physics 15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same time.