surface tension,,,,,,,,,

VITEEE 2015 Guidance › Mechanics questions › surface tension,,,,,,,,,

Two equal spherical bubbles(radius=a) coalease to form a spherical bubble of radius b.If P is atmospheric pressure,then the surface tension of bubble is????????

#Physics #Mechanics

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5 Answers

eureka123 ·2008-12-28 10:18:33

help

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apoorv ·2008-12-29 11:05:25

is d ans.........
P/2(ab/(b-a))

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eureka123 ·2008-12-30 05:18:43

nooooooo

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Lokesh Verma ·2008-12-31 22:40:47

Eureka...

try this way first

PV is constant so...

P₁.2a³=P₂b³

Also

P₁ - P _atm = 4Î³/a

P₂ - P _atm = 4Î³/b

Now substitute P1 from first equation in the 2nd.

And then eliminate P2

Not very difficult

you will get terms of the kind 2a²-b² and 2a³-b³

If you are not able to do let me know.. i will put the complete solution..

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eureka123 ·2008-12-31 22:59:17

thanx....got the answer.

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Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω

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surface tension,,,,,,,,,

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