A system containing an ideal gas at a constant pressure of 1.32 × 105 Pa gains 2120 J of heat.  During the process, the internal energy of the system increases by 2640 J.  What is the change in volume of the gas?

A circular hole in a copper plate is 3.925 cm in diameter at 30.0 °C.  What is the diameter of the hole if the temperature of the plate is raised to 150.0 °C?  The coefficient of linear expansion of copper is 17 × 10–6/C°. 

Sphere 1 has an emissivity of 0.8, its radius is 1 m, and its temperature is 25 °C. Sphere 2 has an emissivity of 0.4, and a radius of 1 m. What should be the temperature of Sphere 2 so it emits radiation at the same power as Sphere 1?   

A heat engine is used to lift a 4500-kg load to a height of 3 m at a constant speed. During the lifting process, the engine received 400,000 J of heat from the fuel burned in its interior. What is the efficiency of the engine?

Sphere 1 has an emissivity of 0.85, its radius is 1 m, and its temperature is 35 °C. Sphere 2 has an emissivity of 0.45 and a radius of 1 m. What should be the temperature of Sphere 2 so it emits radiation at the same power as Sphere 1? 

A student does 1290 J of work while studying.  In the process, her internal energy decreases by 2490 J.  Determine the value of Q, including the algebraic sign.

A student does 1500 J of work while studying.  In the process, her internal energy decreases by 2600 J.  Determine the value of Q, including the algebraic sign.

A circular hole in a copper plate is 2.435 cm in diameter at 20.0 °C.  What is the diameter of the hole if the temperature of the plate is raised to 160.0 °C?  The coefficient of linear expansion of copper is 17 × 10–6/C°. 

A heat engine operates between a hot reservoir at 2500 K and a cold reservoir at 500 K.  During each cycle, 2.5 × 105 J of heat is removed from the hot reservoir and 5 × 104 J of work is performed. Determine the maximum possible efficiency of this engine.

When is hydrolysis used?