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Class 9 Physics Sound.
Speed of sound formula class 9. Now the speed of sound formula is given by. Does each and every particle contributes in compression as well as rarefraction. 667 kn or a kilometre in 29 s or a mile in 47 sIt depends strongly on temperature as well as the medium through which a sound wave is propagating.
Chapter-Sound physics formula is useful for quick revision understand the application of physics formula in class 9 help you to solve questions of Sound in class 9 science. Wavelength Frequency Time Period. At this rate sound will travel one mile in around five seconds.
For every degree Celsius above 0C the speed of sound increases by approximately 06 ms. Name 4 ways in which sound can be produced. The intensity is defined as the energy per unit time per unit area and as the energy or the time ratio is equivalent to the power the intensity is.
Velocity of wave. Where T is the Celsius temperature of the air through which the sound wave is moving. NCERT Solutions For Class 9 Maths.
The time taken for one complete oscillation in the density of the medium is called the Time Period. This pdf sheet consist of chapter-Sound of class 9 physics and updated with all important formula concept with bullet points. The surface which reflects sound should be atleast 172 meters from us only then we are able to hear an echo Calculation We know that Speed of Sound is 344 ms Also human ear can hear 2 voices clearly if 2 sound have a gap of at least 01 seconds We know that Speed DistanceTime Speed Time Distance Distance Speed Time.
ρ Density of fluid. Video Solution for sound Page. By adiabatic compression and rarefaction sound waves move through a gas expansion.
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