12. Which of the following is the property of a system? a) Pressure & temperature
b) Internal energy
c) Volume & density
d) Enthalpy & entropy​

A

Explanation:

Pressure, temperature are measurable properties and they are also known as physical properties.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

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