A note was played on an electric keyboard. The frequency of the note was 440Hz. What does a frequency of 440 Hz mean?
A Frequency of 440Hz means that the wave is oscillating 440 times in one second. Ie. 440 waves are produced every second
NP
Related Physics GCSE answers
All answers ▸Give one advantage and one disadvantage of using nuclear power stations rather than gas-fired power stations to generate electricity. (2 Marks)
Explain why a smoke alarm works by emitting and detecting alpha radiation instead of gamma or beta radiation.
Compare the medical uses of ultrasound and X-rays. Your answer should include the risks, if any, and precautions, if any, associated with the use of ultrasound and X-rays. [6 marks]
State one advantage and one disadvantage of using a CT scanner, compared with ultrasound scanning, for forming images of the inside of the human body. (2 Marks)