last doubts before jee 2!!!!! reply sirs

AIEEE Guidance › Mechanics questions › last doubts before jee 2!!!!! reply sirs

Q1 air streams horz. past an airplane of wing area 120 m^2 and weighs 300kg.The speed over top surface is 60m/s and that under bottom is 45m/s.What is net force

Q2 A ball whose density is p (p<po where po is density of water) from height h.The depth to which ball sinks is____

#Physics #Mechanics

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msp ·2009-04-11 03:26:31

for the second

(Vol)pogh+P_atmos=1/2p(Vol)*v²

vol is the volume of the ball.

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msp ·2009-04-11 03:29:50

F_net=mg-buoyant force.

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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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last doubts before jee 2!!!!! reply sirs

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