Question

the time between a clap and it's echo from a wall is 0.1 sec. if distance of the wall be 17.5m , calculate speed of sound. ?
​

Answer 1

GIVEN :-

• d= 17.5m

• t = 0.1sec

Find :-

• v = ?

Calculation :-

=> sound travelled to the wall and back,

=> thus, d + d= 2d

=> since, total distance = 2d

=> As we know that,

=> v = d/t

•put values

=> .°. v = 2×17.5/0.1

=>$\red{\boxed{\boxed{.°. v = 350m/s}}}$

Therefore, the speed of sound is 350m/s.

Answer 2

$\huge \pink \bigstar \purple{answer : - }$

We are given:

L=17.5m

T=0.1s

Sound traveled to the wall and back, thus total distance is:

$\frac{d} total = l + l = 2l$

Speed is defined as:

v=

$\frac{d}{t}$

So:

$\frac{v}{?} sound = \frac{dtotal}{t}$

Calculating:

Answer:350m/s