Question

What level of sound intensity L corresponds to pressure acting on human body immerses in water at a depth of h = 55 m. The velocity of sound in water is v = 1400 m/s. 2.5​

Answer 1

Answer:

If alpha, beta and gamma are zeros of the polynomial 6x^3 + 3x^2 - 5x + 1 , then find the value of alpha^-1 + beta^-1 + gamma^-1 .