# First Law of Thermodynamics Question

#### bap902

1. Homework Statement
The first law of thermodynamics states ΔQ = ΔU + ΔW. What does the ΔQ and the ΔW represent?

2. Homework Equations
ΔQ = ΔU + ΔW

3. The Attempt at a Solution
I've never seen the equation set up like this before so I'm a little confused. I said that ΔQ is the heat supplied to the system and ΔW is the work done by the system.

Related Introductory Physics Homework Help News on Phys.org

#### Micko

First law of thermodynamics is basically an energy conservation law. It just states that heat that is added to the system is partially converted to system's internal energy and to perform work. That's all. ΔQ is heat added to the system, ΔU is change of internal energy (sum of all potential and kinetic energy of its particles) and ΔW is work done by the system.

### Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving