Question

(Figure 1) shows a history graph at x = 0 m of a wave moving to the right at 1 m/s. What is the snapshot graph of this wave at t = 0 s ?

Item 8 What is the snapshot graph of this wave att 0 s? Constants|Periodic Table cm (Figure 1) shows a history graph at at 1 m/s. 0 m of a wave moving to the right x(m) 2-12 34 5 6 cm x(m) -6-5-4 13-2/1 y (cm) 1 of 1> Figure x(m) 5-43 2-1 y (cm) y (cm) 2-2 3/45 6 x(m) 3-2-1 23 4 5 6

Answer 1

The wave is moving to the right at 1 m/s which means it moves 1 meter in 1 second. The graph in the question shows a displacement vs time graph called the history graph. From 0 to 1 second, there is no movement on y-axis. This means that when the wave moves 1 m to the right in 1 second, there is no movement on y-axis. Construct the snapshot graph based on this data first. -2 -1 Refer to the history graph. (1) Starting from t=1, when the wave moves to the right in 1 second, there is a change in y to -1 cm. This means that when wave moves 1 m to the right, there is a change in y to -1 cm at X=0. The snapshot graph will then have y=0 to - 1 cm when x=-1 to - 2 m Construct the snapshot graph based on this data -4 -3 -2 1 | (ii) Starting from t=2, when the wave moves to the right in 1 second, there is no change in y. This means that when wave moves 1 m to the right there is still no change in y at x = 0. The snapshot graph will then have y=-1 to -1 cm when x=-2 to - 3 m Construct the snapshot graph based on this data.

- 4 3 2 1 (iii) Starting from t=3, when the wave moves to the right in 1 second, there is a change in y to 1 cm. This means that when wave moves 1 m to the right, there is a change in y to 1 cm at x = 0. The snapshot graph will then have y=-1 to -1 cm when X=-2 to - 3 m Construct the snapshot graph based on this data. -4 3-2 (iv) Starting from t = 4, when the wave moves to the right in 1 second, there is a change in y to 0 cm. This means that when wave moves 1 m to the right there is a change in y to 0 am at x = 0. The snapshot graph will then have y=1 to 0 cm when X=-3 to - 4 m. Construct the complete snapshot graph based on this data. y (cm) It -6 -5 -4 x (m) 3-2 + L -1+ Therefore, the second option is correct.