Equations for w

[Jessica Tsui 1H]

I'm a little confused. What was the point of showing the integral for the work equation to arrive at the same work of expansion equation (w = -PV)?

[Kyle Golden Dis 2G]

Dr. Lavelle was basically showing us the proof behind the work equation which is why he got the integral.

[Brian Chhoy 4I]

The integral equation is used when calculating reversible expansion done by a gas, since in this case it is set up so that the change in pressure occurs in small increments till it reaches the volume it should be at in equilibrium. In reversible expansion, the external and internal pressures are nearly identical so that the small changes in pressure will cause a change in the volume. The integral is later substituted for a ln(V2/V1) in the function.

[Annalyn Diaz 1J]

The integral equation is used when calculating reversible expansion done by a gas, since in this case it is set up so that the change in pressure occurs in small increments till it reaches the volume it should be at in equilibrium. In reversible expansion, the external and internal pressures are nearly identical so that the small changes in pressure will cause a change in the volume. The integral is later substituted for a ln(V2/V1) in the function.

Why is the integral replaced with the ln(V2/V1)?

[SydBenedict2H]

So does this mean we aren't going to have to use the integral formula to calculate anything on tests?

[MichaelMoreno2G]

So does this mean we aren't going to have to use the integral formula to calculate anything on tests?

Most likely not, but I would still know it just in case.