Physics Waves And Oscillations Level: High School
The two waves on a strings which have the same wavelength, but different amplitudes and are out of phase . Draw what the string would look like if both waves were on the string at the same time .
Physics Waves And Oscillations Level: High School
The speed of sound in air is about 340 m/s . What is the frequency of a sound wave with a wavelength of 2 meters ? Is this audible ?
Physics Waves And Oscillations Level: High School
All three springs (see the figure at “click here”) are at their free length just before the 200 lb force applied . Determine the deflection and work done on each spring ?
Physics Waves And Oscillations Level: High School
A spring with a constant of 0.3 lb/in . is presently stretched 1.5 in .How much work is required to stretch it in additional 4 in ?
Physics Waves And Oscillations Level: High School
A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling . The elastic potential energy of this spring / mass system is 1.6 J . What is the elastic potential energy of the system when the 3.2 kg block is replaced by a 4.6 kg block ?
Physics Waves And Oscillations Level: High School
Simple harmonic motion
In preparation for shooting a ball in a pinball machine , a spring ( k = 675 N/m) is compressed by 0.0655 m relative to its unstrained length . The ball (m = 0.0565 kg) is at rest against the spring at point A . When the spring is released . the ball slides (without rolling ) to point B , which is 0.300 m higher than point A . How fast is the ball moving at B ?
Physics Waves And Oscillations Level: High School
Simple harmonic motion
When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion . its frequency is 12 Hz . When another object of mass m2 is hung on the spring along with m1 , the frequency of the motion is 4 Hz . Find the ratio m2/m1 of the masses .
Physics Waves And Oscillations Level: High School
Simple harmonic motion
An 0.60 kg object is attached to one end of a spring , and the system is set into simple harmonic motion .The displacement x of the object as a function of time is shown in the figure at “click here” . With the aid of this data . determine the following values .a) amplitude A of the motion
b) angular frequency omega
c) spring constant k
d) speed of the object at t = 1.0 s
e) magnitude of the object’s acceleration at t = 1.0 s
Physics Waves And Oscillations Level: High School
When a rubber band in a slingshot is stretched , it obeys Hooke’s law . Suppose that the “spring constant” for the rubber band is k = 22 N/m . When the rubber band is pulled back with a force of 5.0 N , how far does it stretch ?
Physics Waves And Oscillations Level: High School
Open pipe
A pipe open at both ends has a fundamental frequency of 300 Hz when the temperature is 0 degrees C .a) What is the length of the pipe ?
b) What is the fundamental frequency at a temperature of 30 degrees C ?
Physics Waves And Oscillations Level: High School
Open pipe
The overall length of a piccolo is 32.0 cm . The resonating air column vibrates as in a pipe that is open at both ends .a) Find the frequency of the lowest note a piccolo can play . assuming that the speed of sound in air is 340 m/s .
b) Opening holes in the side effectively shortens the length of the resonant column . If the highest note a piccolo can sound is 4000 Hz , find the distance between adjacent antinodes for this mode of vibration .
Physics Waves And Oscillations Level: High School
Resonance
Resonance of sound waves can be produced within an aluminum rod by holding the rod at its midpoint and stroking it with an alcohol-saturated paper towel . In this resonance mode , the middle of the rod is a node while the ends are antinodes ; no other nodes or antinodes are present . What is the frequency of the resonance if the rod is 1.00 m long ?
Physics Waves And Oscillations Level: High School
Intensity of sound
An outside loudspeaker (considered a small source) emits sound wave with a power output of 100 W .a) Find the intensity 10.0 m from the source .
b) Find the intensity level in decibels at that distance .
c) At what distance would you experiment the sound at the threshold of pain , 120 dB ?
Physics Waves And Oscillations Level: High School
Intensity of sound
Two sounds have measured intensities of I1 = 100 W/m squared and I2 = 200 W/m squared . By how many decibels is the level of sound 1 lower than that of sound 2 ?
Physics Waves And Oscillations Level: High School
Intensity of sound
The toadfish makes use of resonance in a closed tube to produce very loud sounds . The tube is its swim bladder , used as an amplifier . The sound level of this creature has been measured as high as 100 dB .a) Calculate the intensity of the sound wave emitted
b) What is the intensity level if three of these fish try to imitate three frogs by saying “Budweiser” at the same time .
