3- Tuning forks of different frequencies. 4- Rubber pad. 5- Thermometer. Method 1- Select the fork of highest frequency (512 Hz). 2-Strike it smartly on a rubber pad hold it over the mouth of the tube. 3- Adjust the shortest length of the resonance column until resonance occurs. 4- Measure the length of the air in the tube, L (see figure below). 5- Repeat the measurement two or three times and take the mean (L1). 6- Obtain different values of L using other forks (412 Hz......etc). 7- Measure the diameter of the tube to obtain its radius (r). As shown in figure (1): 8- Record the room temperature. 9- Write your results in the table below F (Hz) L (cm) 1/F C: Speed of sound F: Frequency (Le)=L+0.6 r Where L: Shortest resonance length of air column Lc: Corrected length F (HZ) 180 420 384 320 288 C-4FL (m\sec) Live & 0-17 019 0.22 025 29 2-x10-4 23X10-9 26 x 10-7 31 A 107 34 X 14 10- plot the graph from the above obtained results for (1/F) on x-axis against (L) on y-axis and find its slope, as shown in figure (2)
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
Step by step
Solved in 4 steps with 8 images