Why Newton's formula for speed of sound in gas fails? What is Laplace's correction? Write Newton Laplace formula for speed of sound in gas.

Write any two factors that influence the speed of sound through air.

Write the formula to calculate the size of the molecule of gas.

A train at rest blows a whistle of frequency 600 Hz in still air. What is the frequency of whistle for a platform observer when the train.(a) approaches the platform with a speed of 15 ms^(-1) (b) recedes from the platform with a speed of 15 ms-l? What is the speed of sound in each case? Speed of sound in air is 345 ms^(-1) .

A train standing a the outer signal of a railway station blows a whistle of frequency 400Hz in still air . when the train (i) approaches the platform with a speed of 10ms^(-1) ? (ii) recedes from the platform with a speed of 10 ms^(-1) ? What is the speed of sound in each case ? The speed of sound in still air can be taken as 340ms^(-1)

A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate objects under water. In a submarine equipped with a SONAR , the time delay between generation of a probe wave and the reception of its echo after reflection from an enemy submarine is found to be 77.0s. What is the distance of the enemy submarine ? (Speed of sound in water = 1450 ms^(-1)) .