(a)[2]
A progressive wave carries energy. A stationary wave does not carry energy. State two other differences between progressive waves and stationary waves.
(b(i))[2]
On Fig. 5.1, sketch a line to show the string’s position at $t = 5.0\,\text{ms}$.
(b(ii))[1]
State the phase difference between the particles on the string at $x = 0.40\,\text{m}$ and at $x = 0.80\,\text{m}$.
(b(iii))[2]
State and explain how the kinetic energy of a particle at an antinode changes between $t = 0$ and $t = 5.0\,\text{ms}$. A numerical value is not required.