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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

Three liquids of masses $m_{1}, m_{2}, m_{3}$ , specific heats $s_{1}, s_{2}, s_{3}$ and temperatures $θ_{1}, θ_{2}, θ_{3}$ are thoroughly mixed. The mixture temperature is:

Options:

Answer:

Solution:

Neglect losses, phase change and reaction.

$i \sum m_{i} s_{i} (T_{f} - θ_{i}) = 0. T_{f} = \frac{\sum _{i} m _{i} s _{i} θ _{i}}{\sum _{i} m _{i} s _{i}} .$

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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