A student stands 120 m in front of a cliff and produces a sharp clap. The table shows measured values for the speed of sound in air at two temperatures:
Temperature (°C) 5 25
Speed (m/s) 334 346
What is the difference between the round-trip travel times (clap to cliff and back) on the two days?
(a) 0.050s
(b) 0.012s
(c) 0.025s
(d) 0.35s