A technician sends an ultrasound pulse into a thick polymer component. The pulse reflects from an internal boundary and returns to the detector after 0.000080 s. Ultrasound travels through the polymer at 2400 m/s.
Calculate the distance from the surface of the component to the boundary.
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.