3. a steam engine burns coal to boil water, and the steam drives pistons which turn a flywheel.\nwhat is the…
3. a steam engine burns coal to boil water, and the steam drives pistons which turn a flywheel.\nwhat is the system?\nidentify matter and energy in the system\nis there an exchange of matter with the surroundings?\nwhat are the surroundings?\nis there an exchange of energy with the surroundings?\nwhat type of system? (isolated, closed, open)
Answer
Brief Explanations:
- System: The steam - engine components involved in the process (coal, water, steam, pistons, flywheel).
- Surroundings: Everything outside the steam - engine, like the air in the room.
- Matter and energy in the system: Matter is coal, water, steam; energy is chemical energy in coal, heat energy to boil water, mechanical energy of pistons and flywheel.
- Energy exchange: Yes, heat is lost to the surroundings, and mechanical work may be done on external objects.
- Matter exchange: Yes, coal is added (matter input) and exhaust gases are released (matter output).
- Type of system: Open, as there is both matter and energy exchange with the surroundings.
Answer:
- What is the system? The components of the steam - engine including coal, water, steam, pistons, and flywheel.
- What are the surroundings? Everything outside the steam - engine.
- Identify matter and energy in the system: Matter: coal, water, steam; Energy: chemical energy in coal, heat energy, mechanical energy.
- Is there an exchange of energy with the surroundings? Yes.
- Is there an exchange of matter with the surroundings? Yes.
- What type of system? (isolated, closed, open) Open.