1. You are in a classroom with the door shut and all windows shut. The room temp

Question

1. You are in a classroom with the door shut and all windows shut. The room temperature is up to 80 Fereinheit and temperature outside is 25 Ferienheit. There are 30 students and one teacher in the room. Class is in session. Sketch the room and show all energy interactions occuring/taking place. Treat the room as the system boundary. 2. Consider a fan located in a square duct. Velocities at various points at the outlet are measured, and the average flow velocity is determined. Show an energy balance on the system using arrows and detailing the types of energy involved. Reduce the first law of thermodynamics for this system, clearly specifying all energy interactions and types. Assume process is steady state. 3. A system consisting of liquid water and ice undergoes a process. At the end of the process, the ice has melted and the system contains only liquid water. Can the system be considered a pure substance during the process? Explain your answer.

Explanation / Answer

The proposed framework of planetary boundaries lays the groundwork for shifting approach to governance and management, away from the essentially sectoral analyses of limits to growth aimed at minimizing negative externalities, toward the estimation of the safe space for human development. Planetary boundaries define, as it were, the boundaries of the

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