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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediummultiple choice

A solid floats in a liquid. Both are heated by the same positive $Δ T$ . Use $V_{i}^{'} = V_{i} (1 + γ_{i} Δ T)$ and assume it still floats. Select all correct statements.

Options:(select one or more)

Answer:

A, B, C

Solution:

Floating equilibrium gives $f = \frac{ρ _{s}}{ρ _{l}}$ . At fixed mass, $ρ_{i}^{'} = \frac{ρ _{i}}{( 1 + y _{i} Δ T )}$ . Therefore A holds; its ratio is above 1 for B and equals 1 for C. D is false.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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