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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediummultiple choice

An insulated negligible-capacity vessel contains 200 g water at 20°C. Then 100 g ice at 0°C is added. Use $L_{f} = 80 cal / g$ and $c_{w} = 1 cal g^{- 1}^{\circ} C^{- 1}$ . Select all correct final-state claims.

Options:(select one or more)

Answer:

A, B, C

Solution:

Cooling water releases $200 (20) = 4000 cal$ . This melts $\frac{4000}{80} = 50 g$ ice. Remaining ice $= 50 g$ ; liquid $= 250 g$ . Ice and water coexist at 0°C. A, B and C hold.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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