Answer to Question #277450 in Physics for Tania Akter

Question

2. a) Define the surface tension and surface energy. 

b) Explain the elastic limit with an example. Draw the stress-strain curve for elasticity. 

c) A capillary tube with an inside radius of 638 𝑛𝑚 can support a 100 𝑚𝑚 column of

liquid that has a density of 820 𝑘𝑔𝑚−3

. The observed contact angle is 12.5°. Find

the surface tension of the liquid for ℎ = 20 𝑐𝑚.

Answer 1

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