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What is the speed of sound waves? Prediction: I predict that the speed of sound in air will be 330m/s. Method: The apparatus were sat up as below. The metal plate was held 10cm above the start microphone. It was then hit with the hammer and the time it took for the sound to travel to the stop microphone was recorded by the fast timer in microseconds. This was done twice and then the start microphone was moved to the 90cm mark on the ruler the process was repeated until the microphones were 10cm apart. However, nothing else was changed except the distance between each microphone. Result Distance between the microphones (metres) Time for Sound to travel from M1 to M2 (microseconds) 1 2 Average 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 3029 2996 2094 1850 1561 1241 941 641 393 129 3023 2725 2181 2147 1472 1311 892 667 387 110 3026 2860.5 2137.5 1998.5 1516.5 1276 916.5 654 390 119.5 Analysis The graph on the previous page shows the time that was recorded for certain distances. Those distances are different from the ones stated in the results table on page 1. However this will be...

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