Question: 1. Waves on a string. A travelling wave is created on a string. The graph below shows the variation with time t of the displacement y of a particular point on the string. 6tahi yit in The variation with distance x of the displacement y of the string at t=0 is shown below. 6+11111 (a) Use information from the graphs to calculate, for this wave, (i) the

1. Waves on a string. A travelling wave is created on a string. The graph below shows the variation with time $t$ of the displacement $y$ of a particular point on the string. $6ta\mathrm{hi}$ yit in The variation with distance $x$ of the displacement $y$ of the string at $t=0$ is shown below. $6+11111$ (a) Use information from the graphs to calculate, for this wave, (i) the wavelength; (ii) the frequency; (iii) the speed of the wave. (b) The wave is moving from left to right and has period $T$. (i) On graph 1, draw a labelled line to indicate the amplitude of the wave. (ii) On graph 2, draw the displacement of the string at $t=\frac{T}{4}$. A transverse wave travels to the right along a string. (a) Two dots have been painted on the string. In the diagrams below, those dots are labeled $P$ and $Q$. i. The figure below shows the string at an instant in time. At the instant shown, $\mathrm{dot}P$ has maximum displacement and dot $Q$ has zero displacement from equilibrium. At each of the dots $P$ and $Q$, draw an arrow indicating the direction of the instantaneous velocity of that dot. If either dot has zero velocity, write " $v=0$ " next to the dot. ii. The figure below shows the string at the same instant as shown in part (a)i. At each of the dots $P$ and $Q$. draw an arrow indicating the direction of the instantaneous acceleration of that dot. If either dot has zero acceleration, write " $a=0$ " next to the dot. Direction of Wave