Problem 2
A monatomic ideal gas containing moles is heated at constant volume from temperature to . Given the gas constant , find the heat absorbed and the change in internal energy. Assume the string, pulley, electrical source, or optical apparatus is ideal as stated, and neglect any effect not specified. State a clear sign convention, identify the physical Keep one model and sign convention throughout. Reuse each intermediate result with the same convention, then check that the answer has the required physical dimensions. (a) Set up the physical relation. (b) Find an intermediate quantity. (c) Obtain the answer and check its conditions and units.
problems.proof.stepOf
problems.proof.analysis
Internal energy depends only on temperature, so its change is . This is consistent with the stated model and the chosen sign convention.