Properties of Sound
Q: (a) Below is a list of examples of waves. State whether each of the following is transverse or longitudinal: (i) Infra-red (ii) Sound (iii) Radio (iv) Light (v) Waves in a spiral spring (vi) Ripple on water. (b) A certain source produces 279 complete cycles in one second. What is its frequency? (c) Describe and explain an event which shows that light waves travel faster than sound waves. (d) Describe an experiment you can carry out to determine the speed of sound in air. Explain how the equipment would be used and how the final result would be calculated. (e) An echo sounder produces a high pitched sound whose echo is picked up by a hydrophone after 3s. Given that the speed of sound is 1410m/s in water, how deep is the water at this point?
Did You Know?
Find x such that f(x) = 5: 2x - 1 = 5 → 2x = 6 → x = 3. So \(f^{-1}(5) = 3\)
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