A 60 kg skater at 10 m/s stops. Ice at 0°C absorbs 40\% of kinetic energy. Lf = 3.0 × 1 0 5 J / kg . Find melted mass in g.

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A 60 kg skater at 10 m/s stops. Ice at 0°C absorbs 40\% of kinetic energy. $Lf = 3.0 \times 1 0^{5} J / kg$ . Find melted mass in g.

Answer:

4.00

Solution:

Kinetic energy = 3000 J; ice receives 1200 J. Melted mass $= 1200/300000 = 0.004 kg = 4.0 g$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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