What is the internal energy of 50 moles of neon gas at 20.0 degrees celsius

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The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.

The slope of a velocity time graph over any interval of time gives the during that interval