Water exits a garden hose at a speed of 1.2 m/s. if the end of the garden hose is 1.5 cm in diameter and you want to make the water go 15 m high, what fraction of the area of the hole do you have to block off with your thumb? a : 93%b : 14%c : 7.0%d : 73%e : 27%

A 93%

Explanation:

= Pressure will be equal at inlet and outlet

= Density of water = 1000 kg/m³

g = Acceleration due to gravity = 9.81 m/s²

= Velocity at inlet = 1.2 m/s

= Velocity at outlet

= Radius of inlet =

= Radius of outlet

From Bernoulli's relation

From continuity equation

The fraction would be

The fraction is 93.0304%