a sample of an unknown gas (gas A) has a volume of 3.2 m3 at a temperature of 10 degrees C. Another sample of an unknown gas (ga
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To solve this exercise it is necessary to apply the concepts related to Work and Kinetic Energy. Work from the rotational movement is described as
In the case of rotational kinetic energy we know that
PART A) is given in revolutions and needs to be in radians therefore
Replacing in the work equation we have to
PART B) From the torque and moment of inertia it is possible to calculate the angular acceleration and the final speed, with which the kinetic energy can be determined.
Rearrange for the angular acceleration,
From the kinematic equations of angular motion we have,
In this way the rotational kinetic energy would be given by