Question

Calculate the speed of longitudinal waves in the following gases at 0^(@) C and 1 atm( = 10^(5) pa): (a) oxygen for which the bulk modulus is 1.41 xx 10^(5) pa and density is 1.43 kg//m ^(3) . (b) helium for which the bulk modulus is 1.7xx 10^(5) pa and density is 0.18 kg//m^(3) .

Answer 1

Explanation:

Explain the different types of frictional forces with examples?

Answer 2

speed of sound in oxygen gas 314 m/s and speed of sound in helium gas 972 m/s.

(a) oxygen for which the bulk modulus is 1.41 x 10^(5) N/m² and density is 1.43 kg//m³.

using formula, $V_{O_2}=\sqrt{\frac{\beta}{\rho}}$

= √{1.41 × 10^5/1.43}

= √{0.98601 × 10^5}

= √{98601}

= 314 m/s

(b) helium for which the bulk modulus is 1.7 x 10^(5) pa and density is 0.18 kg//m^(3) .

using formula, $V_{O_2}=\sqrt{\frac{\beta}{\rho}}$

= √{1.7 × 10^5/0.18}

= √{9.44444 × 10^5}

= √{944444}

= 971.82 ≈ 972 m/s