Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.573 × 10–3 m³/s and the diameter of the nozzle you hold is 5.09 × 10-3 m. At what speed v does the water exit the nozzle?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
![**Problem Statement:**
Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of \(0.573 \times 10^{-3} \, \text{m}^3/\text{s}\) and the diameter of the nozzle you hold is \(5.09 \times 10^{-3} \, \text{m}\). At what speed \(v\) does the water exit the nozzle?
\[ v = \, \_\_\_\_\_ \, \text{m/s} \]
**Analysis:**
To solve this problem, we need to consider the relationship between the flow rate, nozzle diameter, and the speed of the water exiting the hose. The flow rate \(Q\) is given by the formula:
\[ Q = A \times v \]
where:
- \(Q\) is the flow rate,
- \(A\) is the cross-sectional area of the nozzle,
- \(v\) is the velocity of the water exiting the nozzle.
The cross-sectional area \(A\) of the nozzle can be calculated using the formula for the area of a circle:
\[ A = \pi \left(\frac{d}{2}\right)^2 \]
where \(d\) is the diameter of the nozzle. Here, \(d = 5.09 \times 10^{-3} \, \text{m}\).
Substitute the known values into the formulas to find \(v\), the speed of the water exiting the nozzle.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F568ff014-20eb-4de5-8e14-1d7fe4707f89%2Fcb87889d-72da-4de1-9cd4-d39b9ac7d0da%2F60ip99x.jpeg&w=3840&q=75)
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