B= 105 , c= 205 , D= 15

a. Sound waves belong to which wave category? b. Write a simple harmonic oscillation acceleration equation by taking angular frequency as D rad/s. d. There are two simple pendula with the same mass but with length D m and B m, compare their periods? e. There are two spring pendula with the same mass but with spring constant 500+C N/m and 1000+C N/m, compare their periods? f. Sound of C decibels has how much intensity in watts per square meter? Io = 1.0 x 10-12 W/m Is that enough to damage your hearing? Draw and find the frequencies of first 2 harmonics for following tubes a. A tube open at both ends (tube length is D m) b. A tube open at one end (tube length is B m) c. Which one has the higher frequency