A solid floats in a liquid. γ s = 3 × 1 0 − 5 , γ l = 2 × 1 0 − 4 per °C. Heating by 100°C changes submerged fraction, to first order, by:

f = ρ l ρ s , so f Δ f = ( γ l − γ s ) Δ T = 0.017 . Thus 1.7% increase, C.

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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

A solid floats in a liquid. $γ_{s} = 3 \times 1 0^{- 5}, γ_{l} = 2 \times 1 0^{- 4}$ per °C. Heating by 100°C changes submerged fraction, to first order, by:

Options:

Answer:

Solution:

$f = \frac{ρ _{s}}{ρ _{l}}$ , so $\frac{Δ f}{f} = (γ_{l} - γ_{s}) Δ T = 0.017$ . Thus $1.7%$ increase, C.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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