Exam 17: Traveling Waves

A student attaches a length of nylon fishing line to a fence post. She stretches it out and shakes the end of the rope in her hand back and forth to produce waves on the line. The most efficient way for her to increase the wavelength is to

For the transverse wave described by , determine the maximum transverse speed of the particles of the medium.

A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes 0.8 s for the wave to travel the 20 m to the opposite tower. If one meter of the rope has a mass of 0.35 kg, find the tension in the tightrope.

The figure below shows a sine wave on a string at one instant of time. ​ ​ Use this exhibit to answer the following question(s). -Which of the graphs below shows a wave where the frequency and wave velocity are both doubled?

Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?

The equation is the same as

A piano string of density 0.0050 kg/m is under a tension of 1350 N. Find the velocity with which a wave travels on the string.

You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 6 cm wide but still 5 mm high. You must move your hand up and down once,

Four wave functions are given below. I.y(x, t) = 5sin(4x - 20t + 4) II.y(x, t) = 5sin(3x - 12t + 5) III.y(x, t) = 5cos(4x + 24t + 6) IV.y(x, t) = 14cos(2x - 8t + 3) Use this exhibit to answer the following question(s). -Rank the wave functions in order of the magnitude of the frequencies of the waves, from least to greatest.

Suppose that you were selected for a "Survivor"-type TV show. To help keep your group connected, you suggest that long vines can be tied together and used to transmit signals in cases of emergency. To get the signals to travel faster, you should

For the wave described by y = 0.02 sin (kx) at t = 0 s, the first maximum at a positive x coordinate occurs where x = 4 m. Where on the positive x axis does the second maximum occur?

Which of the following is a solution to the wave equation, ?

Ocean waves with a wavelength of 120 m are coming in at a rate of 8 per minute. What is their speed?

The speed of a 10-kHz sound wave in seawater is approximately 1500 m/s. What is its wavelength in sea water?

The figure below represents a string which has a heavy section and a light section. The mass per unit length of the heavy section is 16 times as large as the mass per unit length of the light section. When the string is under tension, the speed of a pulse traveling in the heavy section is ____ times the speed of that same pulse traveling in the light section.

Bats can detect small objects such as insects that are of a size approximately that of one wavelength. If bats emit a chirp at a frequency of 60 kHz, and the speed of sound in air is 340 m/s, what is the smallest size insect they can detect?

For the wave described by , determine the first positive x coordinate where y is a maximum when t = 0.

You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 4 cm wide but 7 mm high. You must move your hand up and down once,

A 100-m long transmission cable is suspended between two towers. If the mass density is 2.01 kg/m and the tension in the cable is 3.00 × 10⁴ N, what is the speed of transverse waves on the cable?

If y = 0.02 sin (30x − 400t) (SI units), the frequency of the wave is