# Pressure Difference in a 2-m Deep Swimming Pool

• Naeem
In summary, a thermodynamics problem involves the study of energy and its transformations, specifically the transfer of heat and work in systems. The laws of thermodynamics are fundamental principles that govern energy behavior, including the conservation of energy, increase in entropy, and behavior at absolute zero. To solve a thermodynamics problem, one must identify the system and its properties, apply the appropriate laws, and use mathematical equations to calculate variables. Some common applications of thermodynamics include engine design and operation, refrigeration systems, and environmental science. The units of measurement used in thermodynamics vary depending on the property being measured, but it is important to use consistent units for accurate results.
Naeem
Q. Consider a 2-m deep swimming pool. The pressure difference between the top and bottom of the pool is :

Here is what I did:

Pdiff. = Denisty(h20) * height * gravity

Pdiff = 1000* 2m * 9.81 = 19.6 kPa

Is this correct.

Plz help

You are correct. It's just Bernoulli's equation.

- Warren

Sure.But in this hydrostatic case,i think it's called Pascal's law...(not sure,been missing classes on hydrodynamics )...

Daniel.

Meh.

-Warren

## 1. What is a thermodynamics problem?

A thermodynamics problem is a type of scientific problem that involves the study of energy and its transformations. It often deals with the transfer of heat and work, and how these factors affect the behavior of systems at a macroscopic level.

## 2. What are the laws of thermodynamics?

The laws of thermodynamics are fundamental principles that govern the behavior of energy in physical systems. The first law states that energy cannot be created or destroyed, only transferred or converted into different forms. The second law states that the total disorder of a closed system (entropy) will always increase over time. The third law states that the entropy of a perfect crystal at absolute zero is zero.

## 3. How do you solve a thermodynamics problem?

To solve a thermodynamics problem, you must first identify the system and its boundaries, and then determine the relevant properties such as temperature, pressure, and volume. Next, apply the appropriate laws of thermodynamics to the system and use mathematical equations to calculate the desired variables.

## 4. What are some common applications of thermodynamics?

Thermodynamics has many practical applications, including the design and operation of engines, refrigeration systems, and power plants. It also plays a crucial role in fields such as chemistry, materials science, and environmental science.

## 5. What are the units of measurement used in thermodynamics?

The units of measurement used in thermodynamics depend on the specific properties being measured. Some common units include Kelvin (temperature), Joule (energy), Pascal (pressure), and cubic meters (volume). It is important to use consistent units when solving thermodynamics problems to ensure accurate results.

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