Which statements are correct for a plane sinusoidal sound wave of pressure amplitude Δpₘ and particle-displacement amplitude sₘ?

Select all that apply

• Option A

  I = Δpₘ²/(2ρ₀v)

• Option B

  I = ½ρ₀vω²sₘ²

• Option C

  Average intensity is proportional to Δpₘ².

• Option D

  Average sound power through an area A normal to propagation is P̄ = IA.