Physics Waves And Oscillations Level: Misc Level
A metal rod 70 cm long is clamped firmly at one end. When stroked lengthwise, it gives off a 1400 Hz tone. Find the speed of compressional waves (sound) in the metal.
Physics Waves And Oscillations Level: Misc Level
A device is used to measure the speed of sound in air. By raising and lowering a metal can with a rubber tube attached to the bottom the water level in a tube mounted next to the movable can can be changed. Using a 2500 Hz tuning fork, resonances are found at two values for L ( which is the distance from the top of the tube to the top of the water level in the tube ) separated by 6.7 cm. No resonances exist for water levels in between. What is the speed of sound in air according to these results?
Physics Waves And Oscillations Level: Misc Level
A spring is 3.0 m long and it vibrates in three segments to a frequency of 200 Hz. What is its wavelength? b) fundamental resonance frequency and the speed of the waves on the spring?
Physics Waves And Oscillations Level: Misc Level
A heavy weight hangs at the end of a 140- m cable. A worker at the top of the cable notices that when he strikes the top of the cable sideways,the pulse hits the weight after a time of 4.0 seconds. a) With about what frequency must he vibrate the top end if the cable is to resonate in its fundamental? b) in its first overtone?
Physics Waves And Oscillations Level: Misc Level
A 180 cm long string resonates in three segments when it it vibrated at a frequency of 40 Hz. What is the wavelength and speed of the wave?
Physics Waves And Oscillations Level: Misc Level
Jet aircraft mechanics wearing ear protectors are able to converse with each other becasue the ear protectors block out the sound of the jet engine. What physics concept would account for this?
Physics Waves And Oscillations Level: Misc Level
Why do soldiers break step in marching over a bridge?
Physics Waves And Oscillations Level: Misc Level
A person in a cave emits a sound and receives and echo 2.5 seconds later.How far is that person away from the wall?
Physics Waves And Oscillations Level: Misc Level
Police use Doppler radar to detect speeding cars. Explain how the Doppler effect is used in this application.
Physics Waves And Oscillations Level: Misc Level
A car horn is sounding at 400 Hz as it drives down a straight road at a speed of 20 m/s. What frequency does a hitchhiker hear as the car approaches him ?Recedes from him ?Assume v of sound to be 340 m/ s.
Physics Waves And Oscillations Level: Misc Level
In a certain factory the sound level is read to be 83 d B. Find the sound intensity in watts per square meter.
Physics Waves And Oscillations Level: Misc Level
Using the fact that the speed of sound in water is 1500 m/s, find the bulk modulus of water.
Physics Waves And Oscillations Level: Misc Level
An organ pipe resonates to a sound of frequency 264.0 Hz at 20 degrees C.If the pipe is used on a cold day when the air temperature in it is 12 degrees C, what will be its resonance frequency ?
Physics Waves And Oscillations Level: Misc Level
An object moving in simple harmonic motion has an amplitude of 0.20 m and a maximum acceleration of 40 m /s squared. What is the frequency of the system? The answer is 7.1 Hz.
Physics Waves And Oscillations Level: Misc Level
What can be said about an earthquake whose magnitude is 0 on the Richter scale? Whose magnitude is 8 or more?
