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The equation of continuity is : v 1A1 = v2A2
where v and A represent the speed of water stream and its area of cross section, respectively. We are given that
v1 = 1.0 ms-1
A1 = 10-4m2
v2 = velocity of water stream at 0.15 m below the tap
A2 = ?
For calculating v2
u = 1 m/s; s = 1.5 m, a = 10m/s2 and v = ?
v2 – u2 = 2as
v2 – 1 = 2*10 * 0.5 ? v = 2m/s
Hence, A2 = v1A1/v2 = 1*10-4/2 = 5*10-5m2
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