Physics Waves And Oscillations Level: Misc Level
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 the wave 0.800 s to reach the opposite tower, 20.0 m away. If a 1 - m length of the rope has a mass of 0.350 kg, find the tension in the tightrope.
Physics Waves And Oscillations Level: Misc Level
If the frequency of oscillation of the wave emitted by an FM radio station is 88.0 MHz, determine a. the wave s period of vibration and b. its wavelength. (Radio waves travel at the speed of light.)
Physics Waves And Oscillations Level: Misc Level
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 15.5 s. a. How tall is the tower? b. If this pendulum is taken to the moon where the free- fall acceleration is 1.67 m/s squared, what is the period there?
Physics Waves And Oscillations Level: Misc Level
A transverse wave is described by the equation y = A sin ( 12 x + 3600 t). what is the speed of the wave? what is the direction in which the wave is traveling? (All units are SI units.)
Physics Waves And Oscillations Level: Misc Level
A mass of 500 g is fastened to a spring with a spring constsnt of 50 N/M.If the system is set into oscillation, whta are the angular frequency, time period, and frequency of oscillation?
Physics Waves And Oscillations Level: Misc Level
The frequency of light emitted by a star moving away from us (the observer) with speed v will be red-
shifted (its frequency will be lowered ) by an amount,, provided v/c<<1, where c is the speed of light
(c =3.0 *10^8 m/s). How fast is a galaxy receding from us if the observed frequency is . 95 times the natural frequency of the light?
Physics Waves And Oscillations Level: Misc Level
A source of sound waves is operating in midair, far from any reflecting surfaces. If 1.0 m from the source, the sound intensity level is 120 db, what is intensity 1000 m from the source? what is the total power output of source?
Physics Waves And Oscillations Level: Misc Level
You are standing at the roadside as atruck approaches and you mesure the dominant frequency in the truck noise at 1100 Hz. As the truck passes, the frequency drops to 900 Hz. what is the truck s speed?
Physics Waves And Oscillations Level: University
SoundYou are a conductor performing a piece of music with a tuba (f = 40Hz) and a french horn ( f = 1000Hz that are both playing equally loud and both can be heard by the audience equally well. The sound level is about 100db. Now you come to a very quiet part of the music ( sound level is 20dB) but you still want to have the audience hear both instruments equally well. Which instrument do you tell to play more quietly than the other and why? Also approximately what must the ratio of intensities of the two instruments be for equal sound to be heard by the audience?
Physics Waves And Oscillations Level: University
Transfer of ChargeTwo identical conducting spheres carry chagres of +5.0 uC and -1.0 uC respectively. The centers of the spheres are initially separated by a distance L. The two spheres are brought together so that they are in contact. The spheres are then returned to their original separation. What is the ratio of the magnitude of the force on either charge after the spheres are touched to the before they were touched?
(a) 1/1
(b) 4/5
(c) 9/5
(d)5/1
(e) 4/9
Physics Waves And Oscillations Level: University
Superposition of WaveVibrations with frequency 600 Hz are established on a 1.33-m length of string that is clamped at both ends. The speed of the waves on the string is 499 m/s. How many antinodes are contained in the resulting standing wave pattern?
(a) 2
(b) 3
(c) 4
(d) 5
(e) 6
Physics Waves And Oscillations Level: University
BeatsTwo timpani ( tunable drums) are played at the same time. One is correctly tuned so that when it is struck sound is produced that has a wavelength of 2.20 m . The second produces sound with a wavelength of 2.08m. If the speed of sound is 343m/s What beat frequency is heard?
(a) 7 beats/s
(b) 9 beats/s
(c) 11beats/s
(d) 13 beats/s
(e) 15 beats/s
Physics Waves And Oscillations Level: University
Speed of WaveThe tension in a taut rope is increased by a factor of 9. How does the speed of the wave pulses on the rope change if at all?
(a) The speed remains the same
(b) The speed is reduces by by a factor of 3.
(c) The speed is reduces by by a factor of 9.
(d) The speed is increased by a factor of 3.
(e) The speed is increased by a factor of 9.
Physics Waves And Oscillations Level: University
Equation of S H MThe position of a simple harmonic oscillator is given by x(t) = (0.5m) cos(960 t/3) where t is in seconds. What is the period of the oscillator?
Physics Waves And Oscillations Level: University
Closed PipeWhat is the length of the tube of a simple wind instrument closed at one end whos fundamental is also 400Hz if the speed of sound is 343 m/s in air?
(b) What is the frequency of the first overtone of each instrument?
