question_answer

The internal energy of a monoatomic ideal gas is 1.5 nRT. One mole of helium is kept in a cylinder of cross-section\[A=8.5c{{m}^{2}}\]. The cylinder is closed by a light frictionless piston. The gas is slowly heated in a process during which a total of 42 J heat is given to the gas. If the temperature rises through\[2{}^\circ C\], find the displacement (dx) (in cm) of the piston. Atmospheric pressure \[=100\text{ }kPa.\]

Answer:

20.00