The fact that sand gets vely hot but also cools quickly illustrates which of the following? a. the sun heats everything equally b. being near water makes sand cold. c. heating and cooling are similar processes d. substances have differing abilities to retain heat.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.