9. Which of the following does not contribute to the potential energy of an object? height of the object above the Earth's surface gravitational constant or g of the Earth velocity of the object mass of the object

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.