Physics Lab write up 11

# Next the student will find the end correction from

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the slope to find the wavelength of the airwaves in the tube. Next the student will find the end correction from the graph. If differences were used, find the end correction from the wavelength and the first point of resonance. Next find the speed of sound waves from their wavelength and the frequency (λ=v/f). Last the student will compute the speed from the approximate relation: V(t)= 331+0.6t meter/sec, where “t” is the air temperature, in °C. Which when we computed this value for our experiment we got the accepted value to be 343.6 meters per second. In our experiment we got the speed of sound waves ranging from 336.896 to 329.73 meters per second. Thus resulting in percent discrepancies ranging 1.95%-6.72% which is not bad at all. Unfamiliar Terms : Resonance : the tendency of a system to oscillate at greater amplitude at some frequencies than at others. (Wikipedia.org) Pulse : In physics, a pulse is a single disturbance that moves through a medium from one point to the next point.( en.wikipedia.org/wiki/Pulse_(physics) ) Compression : decrease in volume of any object or substance resulting from applied stress.( ) Amplitude : The maximum extent of a vibration or oscillation, measured from the position of equilibrium.( ) Oscillation : motion that repeats itself in a regular cycle, such as a sine wave or pendulum. ( ) Standing waves : the periodic disturbance in a medium resulting from the combination of two waves of equal frequency and intensity travelling in opposite directions. ( ) Node : a point at which the amplitude of one of the two kinds of displacement in a standing wave has zero or minimum value. ( ) Antinode : a point at which the amplitude of one of the two kinds of displacement in a standing wave has maximum value. ( ) Wavelength : the distance, measured in the direction of propagation, between two points of the same phase in consecutive cycles of a wave. ( ) Exhaust valve : a valve through which burned gases from a cylinder escape into the exhaust manifold. ( ) Airwaves : The radio frequencies used for broadcasting.( ) Longitudinal: A wave vibrating in the direction of propagation. ( ) Transverse : A wave vibrating at right angles to the direction of its propagation.

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