Select the most appropriate speed from the options for each wave: (1) Sound in air: 340 m/s340\text{ m/s}340 m/s, 1500 m/s1500\text{ m/s}1500 m/s, or 3.0×108 m/s3.0 \times 10^8\text{ m/s}3.0×108 m/s. (2) Sound in fresh water: 340 m/s340\text{ m/s}340 m/s, 1500 m/s1500\text{ m/s}1500 m/s, or 3.0×108 m/s3.0 \times 10^8\text{ m/s}3.0×108 m/s. (3) Light in air: 340 m/s340\text{ m/s}340 m/s, 1500 m/s1500\text{ m/s}1500 m/s, or 3.0×108 m/s3.0 \times 10^8\text{ m/s}3.0×108 m/s.
An engineering team is testing a continuous straight steel pipeline of length 340 m340\text{ m}340 m. One engineer strikes one end of the pipeline with a hammer. At the far end, a sensor detects the sound transmitted through the air inside the pipe and the sound transmitted through the steel metal walls of the pipe. The speed of sound in steel is 5000 m/s5000\text{ m/s}5000 m/s. Using the value of 340 m/s340\text{ m/s}340 m/s for the speed of sound in air, calculate the time difference between the arrivals of the two sound pulses at the sensor.
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.