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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

An insulated 12 g ice block initially at 0°C receives 4200 J. Take $Lf = 336 J / g$ and water $c = 4.2 J g^{- 1}$ $K^{- 1}$ . What is its final state?

Options:

Answer:

Solution:

Melting needs $12 \times 336 = 4032 J$ . Remaining 168 J warms water by $\frac{168}{( 12 \times 4.2 )} = \frac{10}{3} K$ . All water at 10/3°C.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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