Igcse Model Questions Vol1 2023 Physics Question 8

Practice essay / theory question 8 from the 2023 Igcse Model Questions Vol1 Physics examination. This question covers Specific heat capacity, Latent heat, Calorimetry, Thermal conductivity .

Igcse Model Questions Vol1 2023 Physics Essay / Theory
Topics: Specific heat capacity Latent heat Calorimetry Thermal conductivity
Question 8 IGCSE_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • essay

A calorimeter consists of a thin aluminium container (mass 150 g) that holds 200 g of water at 20 °C. An ice cube of mass 50 g at 0 °C is placed in the water and the lid is closed. The specific heat capacities are: cₐₗ = 900 J kg⁻¹ K⁻¹, c_w = 4180 J kg⁻¹ K⁻¹, and the latent heat of fusion of ice L_f = 3.34 × 10⁵ J kg⁻¹. Assume no heat loss to the surroundings.

Question Parts

( a )
Calculate the final equilibrium temperature of the system after the ice has completely melted.
( b )
Determine the total amount of heat energy transferred from the water and aluminium to the ice during the process.
( c )
A metal spoon (thermal conductivity 200 W m⁻¹ K⁻¹) and a wooden spoon (thermal conductivity 0.15 W m⁻¹ K⁻¹) are both placed in the same boiling water (100 °C). Explain why the metal spoon becomes noticeably hotter than the wooden spoon after 30 s, referring to the relevant physical principles.
( d )
If the aluminium container were replaced by a copper container of the same mass (c_cu = 385 J kg⁻¹ K⁻¹, thermal conductivity 400 W m⁻¹ K⁻¹), discuss qualitatively how the final equilibrium temperature and the rate at which equilibrium is reached would be affected.

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About This Question

This is Igcse Model Questions Vol1 2023 Physics Question 8. It is one of the essay questions from the 2023 Igcse Model Questions Vol1 Physics examination.

The question covers Specific heat capacity, Latent heat, Calorimetry, Thermal conductivity .

View More Igcse Model Questions Vol1 2023 Physics Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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