Ten questions. The result tells you which lessons you may skip.
A wave travels along a rope. What does the wave carry from one end of the rope to the other?
Which of these waves cannot travel through a vacuum?
In a sound wave in air, the molecules of air oscillate
A pulse has the shape \(y = f(x)\) at \(t = 0\) and travels in the positive \(x\) direction with speed \(v\). Its wave function is
A pulse \(y = f(x + 4t)\), with \(x\) in metres and \(t\) in seconds, has its peak at \(x = 10\,\text{m}\) at \(t = 0\). Where is the peak at \(t = 2\,\text{s}\)?
A pulse travels in the positive \(x\) direction along a string. A small piece of string on the front edge of the pulse, ahead of the peak, is moving
Every wave that travels along the \(x\) axis with speed \(v\) satisfies
Why is \(y = (x - 2t)^2\) not a valid wave function?
A harmonic wave is \(y = 0.1\sin(2\pi x - 4\pi t)\), with \(x\) and \(y\) in metres and \(t\) in seconds. Its speed is
Each particle of a harmonic wave completes one oscillation in \(0.5\,\text{s}\), and the wave travels at \(3\,\text{m/s}\). The wavelength is