Loud music is played in a house. A person in the house next door can hear the music through the brick wall between the two houses.
Describe how the sound of the music reaches the air in the house next door.
The person in the house next door mainly hears the low-frequency sounds in the music.
Explain why.
The lowest note in the music has a frequency of 60 Hz. The speed of sound in the brick is 3600 m/s.
Calculate the wavelength of this sound in the brick.
State the frequency of this note when it is heard in the house next door. Give a reason for your answer.
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.