Particle Motion

Step 1: Understanding the Question:
The question asks to identify the thermodynamic classification of the cooling process occurring in an evaporative cooler.

Step 2: Detailed Explanation:
Evaporative cooling is an adiabatic process where air passes over a wet surface.
The air provides the sensible heat required to evaporate the water. This results in the air temperature decreasing (sensible cooling) while its moisture content increases (latent heating).
Since no external heat is added or removed from the system as a whole (it is adiabatic), the total energy (enthalpy) of the air remains constant. Therefore, the process is isoenthalpic.

Step 3: Final Answer:
The air flow in a cooler undergoes an isoenthalpic process as sensible heat is converted into latent heat of vaporization.

In a velocity-time graph, the area under the curve represents the displacement of the object. The slope of the velocity-time graph gives the acceleration. If the graph is a straight line, the acceleration is constant, and displacement can be found by integrating the velocity over time (i.e., finding the area under the graph).