For the following systems, determine whether the system described is best modeled as an isolated, closed, or open system:

(a) an inflated tire
(b) a lawn sprinkler actively in use
(c) a cup filled with liquid water
(d) an engine’s radiator
(e) a rock formation 200 m below the surface


(a) an inflated tire - Closed System
(b) a lawn sprinkler actively in use - Open System
(c) a cup filled with liquid water - Closed System, unless significant evaporation is actively occurring (which would make it an open system)
(d) an engine’s radiator - Open System
(e) a rock formation 200 m below the surface - Isolated System

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