18. Waves & Sound

Is the wave nature of matter significant for bullets moving at typical speeds?

To change the frequency $f$ of a wave, which property of the wave must be altered?

Which phenomenon describes the bending of $\mathrm{waves}$ caused by a change in $\mathrm{speed}$ as they pass from one $\mathrm{medium}$ to another?

Light has both a wave and a particle nature. Particles have a wave nature as well, and therefore which of the following statements is correct about particles such as $electrons$?

A transverse wave with a frequency of 220 Hz and a wavelength of 10.0 cm is traveling along a cord. The maximum speed of particles on the cord is 0.10 the wave speed. What is the amplitude of the wave?

In the context of wave functions, what is the term for the distance between a point on one wave and the same point on the next wave?

Which of the following best describes the difference between $\mathrm{amplitude}$ and $\mathrm{wavelength}$ in a wave?

Which of the following best describes a repeating pattern that can transfer energy?

Which of the following best describes a fundamental difference between $light$ waves and $sound$ waves as they travel through a medium?

Which property is shared by both electromagnetic and mechanical waves?

In the context of wave functions, what is the term for the material through which a wave travels?

A sound wave is represented in the diagram below, showing the displacement of air particles as a function of distance. If the distance between point A and point B on the diagram is $6m$ and the wavelength of the sound wave is $2m$, how many complete wavelengths are present between points A and B?

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: (d) wave speed; (e) direction the wave is traveling;

Given the following wave functions, which wave has the lowest amplitude? $y=2-2x$, $y=0.5-0.5x$, $y=1-1x$, $y=3-3x$