work Kinetic theorem

This is the quiz we did to estimate the amount of heat and initial mass of water based on the temperature-time graph. Also, there is phase change.

We derive a relationship between work and pressure.

In this experiment, we make sure that when heat is added to the system, it doesn't only take heat, the system also do works.

We derive a relationship between change of internal energy and the work done by the system.

This applet shows us that pressure actually comes from the move of those particles, and the speed, kinetic energy, which considered to be the internal energy of gas is influenced by temperature. when temperature is 0K, particles stop move, no internal energy and pressure generated.

At this point, we express the pressure in terms of kinetic energy and volume of the gas system.

We derive the relation of pressure, volume and temperature in isothermal and adivodic.

In isothermal, temperature is constant by transfer some heat to surroundings, therefore, Q = W, the duration is long

In adivodic, system didnt change heat to surroundings, therefore, change of internal energy equals to negative work done by system and duration is short.

This is the experiment we did with adivodic condition. Since we compress the air, we did work to the system which changed to heat that added to system, and the internal energy gets so high in a moment, which caused the little explosion.

We found the temperature when it exploded in the adivodic condition.