18. Waves & Sound

A 10.0-m-long wire of mass 138 g is stretched under a tension of 255 N. A pulse is generated at one end, and 20.0 ms later a second pulse is generated at the opposite end. Where will the two pulses first meet?

Which of the following best describes the difference between transverse and longitudinal waves?

Given the equation $v=\lambda f$, where $v$ is the speed of a transverse wave, $\lambda$ is the wavelength, and $f$ is the frequency, which of the following statements is correct about how the speed of a wave depends on its frequency?

When a guitar string plays the note 'A,' the string vibrates at 440 Hz. What is the period of the vibration?

What is the frequency of an electromagnetic wave that has the same wavelength as a 2.5 kHz sound wave in water?

An oscillating blade creates waves on a string. If the amplitude of the wave doubles, what happens to the wavelength λ and v?

String 1 in FIGURE P16.47 has linear density 2.0 g/m and string 2 has linear density. A student sends pulses in both directions by quickly pulling up on the knot, then releasing it. What should the string lengths L₁ and L₂ be if the pulses are to reach the ends of the strings simultaneously?

A transverse wave travels with a speed of $25 \text{m/s}$ and has a frequency of $400 \text{Hz}$. What is the wavelength of the wave?

A 0.40-kg cord is stretched between two supports 8.7 m apart. When one support is struck by a hammer, a transverse wave travels down the cord and reaches the other support in 0.85 s. What is the tension in the cord?

Given the equation $v=\lambda f$, where $v$ is the speed of a wave, $\lambda$ is the wavelength, and $f$ is the frequency, which of the following statements is correct about how the speed of a transverse wave depends on its wavelength?

Which of the following correctly expresses the relationship between the velocity of a transverse wave $v$, the tension in the string $T$, and the mass per unit length $\mu$?

A 4.4-kg ball hangs from a steel wire 1.00 mm in diameter and 5.00 m long. What would be the speed of a transverse wave in the steel wire?

What is the period of a transverse wave with a wavelength of $8cm$ and a frequency of $0.5Hz$?

A uniform cable 2.0-m long hangs vertically under its own weight. Determine the speed of waves on the cable as a function the distance y (positive down from the top of the cable, where y = 0).

Which of the following is an example of a transverse wave?