Sound waves in solids and fluids bring about different kinds of elastic deformation
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Sound waves in solids and fluids bring about different kinds of elastic deformation.
Answer the following questions.
(i) Define (a) Young’s modulus and (b) Bulk modulus.
(ii) In the expression v=E/ρ, state which modulus E you would use for
(a) a longitudinal wave travelling along a steel wire and
(b) a compression wave moving through liquid mercury.
(iii) Give two reasons in each case to justify the choice of modulus made in part (ii).