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In this problem we will consider a vapor fluid interface on top of a solid surface. A schematic is shown below:
This is a zoomed-in picture of the edge of a liquid droplet sitting on a surface. The change in the Helmholtz energy due to a change in the position of the vapor-liquid interface along the surface is:
Where are the interaction energies (in N/m, analogous to the intermolecular potential but for macroscopic substances) between the three phases and are material-dependant constants. L is the length of the interface in-and-out of the figure (in-and-out of the page) and θ is the contact angle (a) Compute the work (W) required to move the liquid-vapor interface from x0 to a distance x at constant T, L and θ
(b) Find dU for this system for a given T (for constant T).
(c) You perform an experiment and find that the change in temperature as a function of distance (x) under adiabatic conditions is 10 Kelvin/mm. Find how the contact angle would change as a function of applied heat under isothermal conditions at constant x (and constant L).
Explain Joule's Law: "Work done is directly proportional to the heat produced.
Shell type transformers . In this type of transformer the iron core surrounds the copper windings. The core is in the shape of numeral 8. The entire flux passes by the central pa
Find the speed of the wave A copper wire, whose cross-sectional area is 1.1 x 10 -6 m 2 has a linear density of 7.0 x 10 -3 kg/m and is sturng between two walls. At the ambient
Explain the laws of solid friction
actually in my college we are going to celebrate department function for physics we have to keep demos in physics for a project but i don''t have any idea will u help me
Na + ion is isoelectronic with: (1) Li + (2) Mg +2 (3) Ca +2 (4) Ba +2 Ans:(b) Mg +2
what is meant by cryotron?
Describe Fresnel''s theory of optical rotation
(a) Show that the total power in a 3-phase, 3-wire system using the two-wattmeter process of measurement is given by the sum of the wattmeter readings. Illustrate a connection diag
How do you calculate tensile strength? Tensile strength isn't really measured; it's calculated. It is explained as the point at which a sample of material fails when subjected
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