The First Law of Thermodynamics states that energy cannot be created or destroyed, only converted from one form to another. Here's how each of the options represents this law:
1. Automobile engine: When fuel is burned in an automobile engine, the chemical energy in the fuel is converted into mechanical energy that powers the car. This conversion of energy from one form to another adheres to the First Law of Thermodynamics.
2. Superfluid: A superfluid is a state of matter with zero viscosity and infinite thermal conductivity. This unique behavior relates to the conservation of energy as per the First Law of Thermodynamics.
3. Waterbed: The warmth retained by a waterbed showcases the conservation of energy. The electrical energy used to heat the water is transformed into thermal energy, maintaining the temperature of the waterbed.
4. Heat pump: A heat pump transfers heat from a colder area to a warmer area by using mechanical work. This process illustrates the conversion of energy from one form to another, following the principles of the First Law of Thermodynamics.
