Question

from a 840 M height Tower a stone is dropped into a lake at its bottom the sound of the Splash will be heard by the man approximately after speed of sound in 336 2nd​

Answer 1

Given:

Height of a tower (s) = 840 m

Speed of sound in air (v) = 336 m/s²

Solution,

To calculate the time required to hear the sound of the splash by the man:

Using the formula

$s = v*t/2$

$or, 840 = 336 *t/2\\ \\or, t = 840*2/336\\ \\or, t = 5 sec$

Hence, the man hears the sound of splashing in $5 seconds$.