Search results
Formula. We describe surface tension as the ratio of surface force F which applies on a liquid to the length d along which the force acts. This is the same thing that makes insects like water strider to walk on water effortlessly or the floating of a paperclip. Thus, the surface tension formula is: Surface tension = (surface force)/ (length ...
Consider a rectangular frame (see fig. 11.20), having a sliding wire on one of its arms. Dip the frame in a soap solution and take it out. A soap film is formed on the frame and have two surfaces. Both the surfaces are in contact with the sliding wire. So, surface tension acts on the wire due to both the surface.
Assertion :The dimensional formula of surface energy is [M 1 L 2 T − 2] Reason: Surface energy has same dimensions as that of potential energy. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion; Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Heat flux is the rate of thermal energy flow per unit surface area of the heat transfer surface, e.g, in a heat exchanger. The main parameter while calculating heat transfer is heat flux. We will further study the types of Heat Flux and the heat flux formula.
Mainly, it finds the charge density per unit volume, surface area, and length. It measures the amount of electric charge per unit measurement of the space. This space may be one, two or three dimensional. Charge density will depend on the position, which can be negative. The formula for Surface Charge Density: Surface charge density is computed as:
The work is done to increase the surface area is stored in the form of P.E. the potential energy per unit area is called surface energy.
Surface energy is the energy per unit area of the surface. Thus S. E. = A r e a E n e r g y i.e. S. E. = A r e a W o r k d o n e So, dimensional formula is: i.e. S. E. = [L 2] [M L 2 T − 2] S. E. = [M L 0 T − 2] Also, Potential energy, P. E. = m × g × h. Its dimensional formula is: P. E. = [M 1] [L 1 T − 2] [L 1] P. E. = [M 1 L 2 T − 2]
The work in ergs required to be done to increase or extend the surface area by 1 sq cm is called surface energy. The units of surface energy are, therefore, ergs per sq cm or joules per sq m in S.I. system. Surface Energy = work per sq cm= (Force× length) per sq cm = dynes cm-1. Browse more Topics under Mechanical Properties Of Fluids
Initial surface energy of n drops = n E = n (4 π r 2) × T final surface energy of big single drop = (4 π R 2) × T = (4 π (n 1 3 r) 2) × T = n 2 3 (4 π r 2 × T) = n 2 3 E from (I) Clearly n 2 3 E < n E i.e. final surface energy < initial surface energy that means some energy will be released in this process. And the energy released in ...
The surface energy of a droplet is proportional to its surface area. After spraying into 1000 droplets, let the radius of each one will be r. 4 3 π R 3 = 1000 ( 4 3 π r 3 )
