Question

The speed, v, of a wave is inversely proportional to the square root of the
depth, d, of the water. When v= 30 then d = 400.
Find y when d=25.

Answer 1

Answer:

v = 120

Step-by-step explanation:

If v is inversely proportional to square root of d, then we can write

$v \sqrt{d}$ = k    

If v  = 30 and d = 400, then

30($\sqrt{400}$) = k

k = 30(20) = 600

Now $v \sqrt{d}$ = 600

If d = 25, then v$\sqrt{25}$ = 600

                         5v = 600

                            v = 120