18. Waves & Sound

Which of the following properties are shared by all mechanical waves?

Which of the following correctly defines the amplitude of a wave?

A string that is under 50.0 N of tension has linear density 5.0 g/m. A sinusoidal wave with amplitude 3.0 cm and wavelength 2.0 m travels along the string. What is the maximum speed of a particle on the string?

If the amplitude of a wave is tripled, what happens to its frequency?

Which of the following wave properties are exhibited by particles according to quantum mechanics?

Which of the following best describes a disturbance that transfers energy from one place to another without transferring matter?

Which of the following best describes a visual difference between a longitudinal wave and a transverse wave?

A 2.0-m-long string vibrates at its second-harmonic frequency with a maximum amplitude of 2.0 cm. One end of the string is at x = 0 cm. Find the oscillation amplitude at x = 10, 20, 30, 40, and 50 cm.

A wave is traveling at $4.00m/s$ and has a wavelength of $2.20m$. What is the frequency of the wave?

When observing water waves, how does increasing the $f\left(\mathrm{frequency}\right)$ and $A\left(\mathrm{amplitude}\right)$ affect the waves?

A fellow student with a mathematical bent tells you that the wave function of a traveling wave on a thin rope is $y(x,t)=\(\left\)(2.30\(\operatorname{mm)}\]\cos\)[\(\left\)(16.98\(\text{ }\)rad/m\(\right\))x+(742\(\text{ }\)rad/s\(\right\))t]$. Being more practical, you measure the rope to have a length of $1.35\(\text{ m}\)$ and a mass of $0.00338\(\operatorname{kg}\)$. You are then asked to determine the following: (a) amplitude; (b) frequency; (c) wavelength.

What is the speed of a wave with a wavelength of $56m$ and a frequency of $0.02\mathrm{Hz}$?

The figure shows the circular wave fronts emitted by two wave sources placed a fixed distance apart in phase. At a point where the path difference between the waves from the two sources is $1\lambda$ (where $\lambda$ is the wavelength), what type of interference occurs at that point?

Which of the following best describes a key difference between how light and sound travel?

In which type of wave is the disturbance parallel to the direction of wave travel?