An adiabatic closed system is raised 100 m at a location where the gravitational acceleration is 9.8 m/s2. What Is the specific energy change of this system in kJ/kg?

0.98kJ/kg

Explanation: for a kilogram mass of this system, raising the system at a height h gives it a potential energy of the magnitude gh,

Where g is gravitational acceleration,

and h is the height difference.

This system will have an energy change of

PE = 100*9.8 = 980 J/kg

This becomes 980/1000 kJ/kg

= 0.98kJ/kg

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