Test:241 QNo:1

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When a block of iron floats in mercury at 0Â°C, a fraction k₁ of its volume is submerged, while at the temperature of 40Â°C, a fraction k₂ is seen to be submerged. If the coefficient of volume expansion is Î³_Fe and that of mercury is Î³_Hg, then the ratio k₁/k₂ can be expressed as

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2 Answers

1

cute_cat ·2010-05-03 04:14:40

this is the explaination given

mg=k1V1d1g
mg=k2V2d2g
k1V1d1=k2V2d2g

nw i get everything .... except this part.....

"
k1/k2=(V2/V1)*(d2/d1)
=(1+40Î³Fe)/(1+40Î³Hg)

"

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cute_cat ·2010-05-03 04:17:44

plzz somebdoy explain

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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

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

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

° ∂ ∞ 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