Question: A string of length 0.80 m is fixed at both ends. The diagram shows a standing wave formed on the string. P and Q

A string of length 0.80 m is fixed at both ends. The diagram shows a standing wave formed on the string. P and Q

A string of length 0.80 m is fixed at both ends. The diagram shows a standing wave formed on the string. P and Q are two particles on the string. 0.8 The variation with time t of the displacement of particle P is shown. displacement 04 DB 12 1,6 20 24 28 t/ms ai (a.i) Draw, on the axes, a graph to show the variation with t of the displacement of particle Q. (a.ii) Calculate the speed of waves on the string. It is suggested that the speed of waves in the string is related to the tension force 7 in the string according to the equation T=ad, where a is a constant. (b.i) Determine the fundamental Sl unit for a. (b.ii) The tension force on the string is doubled. Describe the effect, if any, of this change on the frequency of the standing wave.

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