1. When does work have a positive magnitude in the equation for the first law of thermodynamics? When is it negative? Speak to both the \"system\" and \"surroundings.\" 2. A thermodynamic process that maintains a constant volume is called an isochoric process. During these types of processes, the gas does m work because it is not increasing the volume of the container. If you sealed off the top of a water bottle and shook 100 mL of water for two minutes! you would find that the water is warmer when you take a drink. If you shook the water long enough to raise the water's temperature 5 C, what is the change in internal energy of the system? Show your work. 3. Cite an example of how the First Law of Thermodynamics relates to metabolism in humans