Water flows with constant speed through a garden hose that goes up to 27.5 cm high. if the water pressure is 132kpa at the bottom of the step, what is its pressure at the top of the step?

The pressure of the water at the top of the step is 1.293 x 10⁵ Pa.

The given parameters:

The pressure of the water at the top of the step is calculated as follows;

where;

is the density of the water

Thus, the pressure of the water at the top of the step is 1.293 x 10⁵ Pa.

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The pressure at the top of the step is 129.303 kilopascals.

Explanation:

From Hydrostatics we find that the pressure difference between extremes of the water column is defined by the following formula, which is a particular case of the Bernoulli's Principle ():

(1)

, - Total pressures at the bottom and at the top, measured in pascals.

- Density of the water, measured in kilograms per cubic meter.

- Height difference of the step, measured in meters.

If we know that , , and , then the pressure at the top of the step is:

The pressure at the top of the step is 129.303 kilopascals.

1. emission spectrum

2. excited state

3. energy level

4. quantum

Explanation:

1. The distribution of light when passed through a prism or other device that breaks the light into its individual components is referred to as emission spectrum.

2. The state where one or more electrons is in a higher energy level than ground state due to the addition of energy, often in the form of heat or light is referred to as excited state.

3.  The regions located around the nucleus where the electrons are found is referred to as energy level.

4. The energy available or given off in specific quantities is referred to as quantum.