In a heat engine, if 700j of heat enters the system, and the piston does 400j of work, what is the final internal thermal energy of the system if the initial energy is 1200j?

Hello!

1500 J

Explanation:

We are going to use the first law of thermodynamics which can be summarized as:

Δ


So, we have that:





By substituting we have:

 

Have a nice day :)

Independent variable is something that is changed in a experiment. 

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.