94.06: Which of the following statements about the spvd 8cm33oas rkp++ag.eed of waves on a string are trued g33+ cpak r.+a8ovsm?
I. The speed depends on the tension in the string.
II. The speed depends on the frequency.
III. The speed depends on the mass per unit length of the string.

  97.23: String L and sty,8l5cdl p 6m zrwz29lring H have the same tension and length. String L has mass m and string H has mass 4m. If the speed waves in string 9 ,2w yc6m5r lzlpzd8lL is v, the speed of waves in string H is

  07.44: A person vibrates the end of a string sending trabxxyp+:57qhqj3 ;mlznsverse waves down the string. If the person then doubles the rate at which he vibrates the string, the speed hp x;+qb:537xq jz ymlof the waves

  11.23: A string, clamped at both ends, r d7x56t0bsip has its tension fixed. A wave generator vibrates the string witsb5dtp70ix 6r h a frequency $f$ producing waves of wavelength $\lambda$ which have speed v. The frequency of the wave generator now is doubled to $2f$. Which one of the following choices best describes the new values of the wavelength of waves produced and the speed of the waves on the string？

  95.01： Which is not associated wi6 kt4sh9nuac:yd 6,s9c ckhk+th a sound wave?

  95.04： A wave has a frequency of 50 Hz. Ttun* :z,.nbn ;t4 h vjhlk8xc0he period of the wave is:

  04.04： A metal bar is vibrating with a frequency of 200 Hz. The period of osc3iuvp(+ z6+lgk9vt/ zyg 0jl eillation would bev+pez vty/(g+jl3l i0 u6k9zg:

  01.38: The S-waves (transverse) and P-waves (longitudinal) produced by earyf 7yd/ji un,2thquakes tray,yn27/i du jfvel at different speeds through the earth. S-waves travel about 4000 m/s, P-waves travel at nearly 7000 m/s, how far away must an earthquake be for the P-waves to arrive 2 minutes before the S-waves?

  17.07: A traveling sine wave of frequencyynjc1 x0t ,zy,c kl6k0 3.0 Hz is known to move at 6.0 m/s on a string. Which one of the following figures best represents what a one-meter section y,6tn jz y0c01kkc, lxof the string could look like at an instant of time?

  13.24: Which one of the following statements best desm(tk ej w29h hm1nb);zhea.+q oci9lhq q43a* cribes Huygens’s Principle?ol h9q ew 4j3h mie)+9 tcma 1a;nhzb*h2(.qkq

  02.07: The diagram shows two water pulses which were orj +;,q9 zjwt2vkwkblp/d k 48miginally produced at point A and are beginning to be reflected from a wide barrier as shown. Which of the points in the diagram would represent a virtual source for the reflected wa2m4lvj,q; k /pz +t98w wjkbdkves?

  96.03: If the frequency of sound is doubled, the waveleohaxpdb).o: ;vg5c 7rngth:

  99.27: Assume that waves are propagating in a uniform medium. If the bw / po+/w ,d),vuajpbfrequency of the wave source wpda+p/ u,)jb v,obw/
doubles then

  98.02: An observer hears a sound with frequency 400 Hz. Its wavelength is m pdflevs+4q 9y.,fz* approximat zsf.9f ,*4l+mpey dvqely

  The graph below was produce eiki/ ai)0 + jv)ou,kmby a microphone in front of a tuning fork. It shows the voltage produced from the microphone as a function )e+iojvuk,ik/) a 0i mof time.


04.18: The frequency of the tuning fork is (approximately)

  The graph below was produce by a microphone in frontoqj :-;n4 :sdckp3ich(y r n gk9wtu4- of a tuning fork. It shows th k4g:4d9;qsciw(-tcnhu3oyr n-jp: ke voltage
produced from the microphone as a function of time.

04.19: In order to calculate the speed of sound from the graph, you would also need to know

  06.28: A radio signal with a wavelengthc,.j fu*d pv-m of $1.2 × 10^{−4}\:m$ is sent to a distance asteroid, is reflected, and returns to Earth 72 hours and 48 minutes later. How far from Earth is the asteroid?

  08.46: A traveling wave has the form y = 3.0sin(80rvtwdp. p0 hi vhkp,z6c:x)vyd m), 2.5 x − 5.0 t) where all quantities given are in MKS units, x is position, and t represe)cp0t,k w x i ddmr,ppyv:.h )vz086vhnts time. What is the period of the wave (in seconds)?

  11.17: A new radio station broadcasts its y1f5rps-8ww snfi 6e 0signal with a wavelength of 3.40 m. At what frequencywe yfn1s p850ri6-wsf is this station broadcasting?