94.06: Which of the following statements about the speed ,bvle..n+:dn ib.c iuof waves on a string are trueicb lu:dbn..n,v+ i.e?
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 string H have the same tension and length. String L has /abtd /l92xw +lkjem) mass m and string H )l2wam/+/9bl dj ektx has mass 4m. If the speed waves in string L is v, the speed of waves in string H is

  07.44: A person vibrates the end of a string sending transverse waves down tug vjwr ()ny5)vmxp;/ nwr4w1he string. If the person then doubles the xvvup5;)j( gnr)n1 wr w4/wmy rate at which he vibrates the string, the speed of the waves

  11.23: A string, clamped at b q3zzl.yia2 )soth ends, has its tension fixed. A wave generator vibratesisaq3l2y.)z z the string with 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 assg,hbiw3(n b(p ociated with a sound wave?

  95.04： A wave has a frequency of 50 Hz. The period of the oo1a2 t+itr l0wave is:

  04.04： A metal bar is vibrating with e h;w nyk 8r 4q+dps3b:l)fc:wa frequency of 200 Hz. The period of oscillation s 3lnye;wk8cq+:wfbp4 d:) hrwould be:

  01.38: The S-waves (transverse) antci 4 d (kg40:p+hcmjrd P-waves (longitudinal) produced by earthquakes travel 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 forc 4hri :+4d(cpj0t kgm the P-waves to arrive 2 minutes before the S-waves?

  17.07: A traveling sine wave of frequency 3.yh5x.2glur,to/ i nxh*tv2 3g 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 of the string could look like at an instant of tim*x52 3xg2,.y /ohthiunr gltve?

  13.24: Which one of the following statements best describes Huygens’s Princi xgr /wz mf+j1q698b*ccphy :wple?wyqjb zf+9xchwrpm *gc6 8:/1

  02.07: The diagram shows two water pulses which were originwcrzpr9m kh:,.1wla+ ally 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 re1w mpz:h+ .r9lcakrw,flected waves?

  96.03: If the frequency of sound is doubled, the e+c s.t1u5tez+yb n3awavelength:

  99.27: Assume that waves are propaga.dj0b )hg7vn jting in a uniform medium. If the frequency of the wave ) jjbvn. 0gd7hsource
doubles then

  98.02: An observer hears a sound with frequency 400 Hz. uch6 ,5dgdy2o jq4 x2xIts wavelength is approximate6jqx4y25g, xd 2cuhdoly

  The graph below was prod x:i8qi qbl(td 51m8u4xt;exxa: o )rcuce by a microphone in front of a tuning fork. It shows the vo1m: 5tq;8l( :o)q d8i xuxexcirat4bxltage produced from the microphone as a function of time.


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

  The graph below was pro gu+uafzjlv wj+9 z,d)w1 3-wvduce by a microphone in front of a tuning fork. It shows t)+u-,dzvlvwu+g wz1w3jf j9 ahe 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 wo;7.gd6g mr4tp9 w hcj +vc)zyavelength 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(2.5 x − 1pj904 sc d3jlum cy7qj3oh7c5.0 t) where all quantities given are in MKS units, x is position, and t represents time. What is the period of yu p s47do 93j0cjmql3c1j7chthe wave (in seconds)?

  11.17: A new radio station broadcasts its lgac3+b , ,m;l,qwcgesignal with a wavelength of 3.40 m. At what frequency is this station broadcast em3a bqlg,w+, c;lcg,ing?