# What is the thermal energy of the gas?

• fadooda
In summary, the conversation discusses a cylinder of nitrogen gas with a movable copper piston and the calculation of thermal energy based on the rms molecular speed and gas temperature. The pressure of the gas is also mentioned, but further information is needed to determine the thermal energy.
fadooda

## Homework Statement

A 6.0-cm-diameter cylinder of nitrogen gas has a 4.0-cm-thick movable copper piston. The cylinder is oriented vertically,
and the air above the piston is evacuated. When the gas temperature is 20 deg C, the piston floats 20 cm above the bottom of the cylinder.
-If the rms molecular speed is 550 m/s, what is the thermal energy of the gas?

P was figured to be 3500 Pa

Welcome to PF

We generally like to see the sections from the homework template filled in. For example, what equation is there that deals with the thermal energy of a diatomic gas such as nitrogen?

## 1. What is thermal energy?

Thermal energy is the energy that a system has due to the movement of its particles. It is a form of kinetic energy that is generated by the random motion of atoms and molecules within a substance.

## 2. How is thermal energy related to temperature?

Thermal energy is directly related to temperature. As the temperature of a substance increases, so does its thermal energy, and vice versa. This is because higher temperatures mean that the particles within a substance are moving faster, resulting in more thermal energy.

## 3. What units are used to measure thermal energy?

The SI unit for thermal energy is joules (J). However, it is also commonly measured in calories (cal) or British Thermal Units (BTUs) in non-scientific contexts.

## 4. How is thermal energy different from heat?

Thermal energy and heat are closely related concepts, but they are not the same thing. Thermal energy is the total energy of a system due to the movement of its particles, while heat is the transfer of thermal energy from one object to another due to a temperature difference.

## 5. What factors affect the thermal energy of a gas?

The thermal energy of a gas is affected by several factors, including the temperature, pressure, and volume of the gas. It is also influenced by the number of particles in the gas and the type of gas molecules present.

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