Question

Ater is flowing continuously from a tap having an internal diameter 8×10−3m8×10−3m. The water velocity as it leaves the tap is 0.4 ms−10.4 ms−1. The diameter of the water stream at a distance 2×10−1m2×10−1m below the tap is close

Answer 1

according to eqn of continuity,

a*v=a'*v'

upon manipulation on both sides,

we can write

8*10^-3 *0.4 = d * 2*10^-1

and

d= 1.6*10^-2m