Showing 31 to 40 of 178 Questions
  • A series of pulses, each of amplitude 0.150 m, is sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. What is the net displacement at a point on the string where two pulses are crossing? (a) If the string is rigidly attached to the pos

    0
    400
  • A shower stall measures 86.0 cm X 86.0 cm X 210 cm. If you were singing in this shower, which frequencies would sound the richest (because of resonance)? Assume that the stall acts as a pipe closed at both ends, with nodes at opposite sides. Assume that the voices of various singers range from 130 Hz to 2 000 Hz. Let the speed of sound in

    3
    648
  • A sphere of mass M is supported by a string that passes over a light horizontal rod of length L (Fig. P18.29). Given that the angle is / and that f represents the fundamental frequency of standing waves in the portion of the string above the rod, determine the mass of this portion of the string.

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    189
  • A standing wave is set up in a string of variable length and tension by a vibrator of variable frequency. Both ends of 65 the string is fixed. When the vibrator has a frequency f, in a string of length L and under tension T, n antinodes are set up in the string. (a) If the length of the string is doubled, by what factor should the frequ

    0
    189
  • A standing wave is set up on a string, as shown in Figure 18.10. Explain why no energy is transmitted along the string.

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    127
  • A standing wave on a rope is represented by the following wave function:where x and y are in meters and t is in seconds. (a) Write wave functions for two traveling waves that when superimposed will produce the resultant standing-wave pattern. (b) What is the distance between the nodes of the standing wave? (c) What is the velocity of a se

    0
    101
  • A standing-wave pattern is observed in a thin wire with a length of 3.00 m. The equation of the wave is where x is in meters and t is in seconds. y = (0.002 m) sin (πx) cos (100πt) (a) How many loops does this pattern exhibit? (b) What is the fundamental frequency of vibration of the wire? (c) What If? If the original

    1
    421
  • A steel wire having a mass of 5 g and a length of 1.4 m is fixed at both ends and has a tension of 968 N. (a) Find the speed of transverse waves on the wire. (b) Find the wavelength and frequency of the fundamental. (c) Find the frequencies of the second and third harmonics.

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    105
  • A string 3 m long and fixed at both ends is vibrating in its third harmonic. The maximum displacement of any point on the string is 4 mm. The speed of transverse waves on this string is 50 m/s. (a) What are the wavelength and frequency of this wave? (b) Write the wave function for this wave.

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    84
  • A string 3.2 m long and with a linear mass density of 0.008 kg/m is kept under tension so that traveling waves propagate at 48 m/s along the string. The ends of the string are clamped and the string vibrates in its 3rd harmonic with an amplitude of 5.0 cm. How much energy is stored in this vibrating system at that time? If the amplitude o

    0
    92
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