Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. what is helen most likely trying to do? (a) maintain the direction of the current flow (b) reverse the direction of the current flow (c) decrease the amount of current (d) increase the amount of current

What is the thermodynamic driving force for dissolving a solid in a liquid if it is an endothermic process (which reduces the entropy of the surroundings)? 1. the combustion of propane. 2. the increase of the entropy of the system. 3. increased temperature of the system and surroundings. 4. the decrease of the entropy of the system. 5. the increase or decrease of the entropy of the system?