Pathar ko pani me fekte he to sabse pahle qya hota he?
A stone is dropped into a well of depth 67.6 m. The splash of water is heard after 3.91 seconds. Find the velocity of sound in m/s?
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die. What am I ?