Recent content by r.physics

Homework Statement I have the ammonia liquid-vapour tables and I have noticed that the enthalpy of a saturated vapour increases as temperature increases. Can someone please help me to understand why this is the case? Homework Equations H = U + pVThe Attempt at a Solution I assume that at...

Thankyou for your reply. If I'm understanding what your suggesting correctly, I would now do: ∫dw = ∫ (F ⋅ dr) between the limits of t=2 and t=1 This leaves me with Δw = [ 4t-1 i + 3t-1/2 j + 2 k ]⋅[4 ln(t) i + 6t1/2 j + 2t k] With the limits being 2 and 1, I don't think I have done what you...

The question is as follows: An object of mass m=1 follows the trajectory: r(t) = 4 ln(t) i + 6t1/2 j + 2t k Calculate the force acting on the object and hence find work done between t=1 and t=2. I know that Force = Mass * Acceleration Therefore, F(t) = 1 * a(t) I also know that a(t) =...