18. Waves & Sound

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

In the context of the velocity of transverse waves, what are the low points of a transverse wave called?

Which of the following is a similarity between transverse and longitudinal waves?

What is the speed of a transverse wave with a frequency of $2\mathrm{Hz}$ and a wavelength of $87m$?

As the frequency $f$ of a transverse wave increases, what happens to its wavelength $\lambda$ if the wave speed $v$ remains constant?

A 2 m long string is arranged as shown in the figure below. If the mass of the string is 0.5 kg, what would the frequency be of a wave with a 2 cm wavelength?

A rope with length 2.50 m and mass 0.10 kg is stretched and pulled to create transverse waves of frequency 40.0 Hz and wavelength of 0.750 m. How much tension is exerted on the rope?

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

The string in FIGURE P16.59 has linear density μ. Find an expression in terms of M, μ, and θ for the speed of waves on the string.

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?

The wave speed on a string under tension is 200 m/s. What is the speed if the tension is halved?

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?

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?

A ski gondola [pronounced gon–do–la] is connected to the top of a hill by a steel cable of length 710 m and diameter 1.5 cm. As the gondola comes to the end of its run, it bumps into the terminal and sends a transverse wave pulse along the cable. It is observed that it took 17 s for the pulse to return. What is the tension in the cable?

A transverse wave on a wire is given by D (x, t) = 0.015 sin ( 35x - 1200 t), where D and x are in meters and t is in seconds. What is the speed of either wave?