Physics - periodic motion, sound, waves

 Frequency units: Hz = 1/s Angular frequency radians/s Hooke's law Restoring force of a spring k = spring constantx = displacement Angular frequency of a spring oscillations/s potential energy of a spring kinetic energy of a spring Restoring force of a pendulum θ= angle between pendulum arm and vertical Angular frequency of a pendulum L= length of arm Potential energy of a pendulum h = height difference from equilibriumAt maximum displacement, potential energy is maximum Speed of a wave v = fλ for light: c = fλ c= 3 x 108 λ = wavelength Length of pipe open at both ends n= harmonic Length of pipe closed at one end Intensity of sound intensity is the average rate per unit area that energy is transferred across a perpendicular surface by the wave.P = powerA = amplitude Sound level Io = lowest intensity of hearing BEat frequency Doppler effect vd = velocity of detector. Negative If source stops and detector is moving away.vs =velocity of source. Negative if detector stops and source is moving towards.v = speed of sound in airf' = perceived frequencyf = actual frequency Authormisbah ID220531 Card SetPhysics - periodic motion, sound, waves Description.. Updated2013-05-21T16:22:07Z Show Answers