A cylinder of mass 65kg has a radius of gyration 0.8m the cylinder is rotated by a belt at 4 revolutions per second. Calculate the rotational kinetic energy of the cylinder.​

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume