Answer:
d= 852.01 m
Explanation:
Given that
Speed of sound in air u= 343 m/s
Speed of sound in concrete v= 3000 m/s
Lets take time taken by sound in the concrete is t then the time taken by sound in air will be t+2.2 s .
The distance (d)travel will be same in both the cases.
We know that
Distance = Velocity x time
So
d= 3000 x t = 343 x (t+2.2)
3000 t = 343 t + 343 x 2.2
t= 0.284 s
So the distance d
d= 3000 x 0.284 m
d= 852.01 m
<span>Homeostasis maintains internal balance of the cell.-- Things like shiver if cold sweating if hot to maintain internally </span>
Answer:
Babies often struggle to go to sleep sometimes warm milk and sooting sounds help babies sleep
Explanation: