Well it has to be either the change in heat or the change in temperature. Or is it a mixture of both? I'm trying to find an expression but most of them deal with the mass of the object.
If the system starts at A and then returns to A that would mean everything goes back to how it started, right? Does that mean the work out would be the work in? I'm unsure.
Then ΔU is just equal to Q + W? I don't know what to say. And I was asking if it's the difference in either heat or difference in temperature, but I guess it's not. I'm really new to thermodynamics so I'm not sure how to answer these questions. Sorry.
Edit: I tried ot take the difference...
Homework Statement
An inventor claims to have developed a device with the following properties:
net work output per cycle = 20,000 J
heat output per cycle = 50,000 J
high temperature = 450 C
low temperature = 160 C
Calculate the heat input per cycle.
Homework Equations
ΔETH = W + Q
efficiency...
Oh wow, I feel dumb for not even noticing that. So does the length of the vine not matter in finding the height?
9.8h = 1/2(6)2 and I just solve for h to get the answer to the first part?
Homework Statement
Tarzan runs at 6 m/s and grabs a vertical vine (negligible mass) of length 4.1 m which is tied to a branch at the top. Tarzan then swings up.
Determine the maximum height Tarzan will swing up and the maximum angle the vine will make with respect to vertical.
Homework...