24) the youngs modulus, E is the same for the same material, regardless of the length and cross sectional area, etc.
the SAME STEEL is used, so E is the same
26) ok now the molecules at Q are 2r from the source
and Intensity is inversely proportional to the distance from the source
d = 2r >> Intensity x 1/ 2^2 = 1/4
if intensity is decreasing by 4, and intensity is directly proportional to the amplitude...
then the amplitude is decreased by the square root of 4 = 2, so amplitude x 1/2
amplitude Q = 8 x 1/2 = 4 micrometers
please answer this: n10 12: qs 8(my answer is coming 0.49ms-2) can any1 help me plzz