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2.2 Thermal properties and temperature

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Question 275

A glass contains 0.30 kg of water at 70∘C70^\circ\text{C}70∘C. Some time later, the water has cooled to 20∘C20^\circ\text{C}20∘C.

How much thermal energy has been transferred from the water to the surroundings?

(The specific heat capacity of water is 4200 J/(kg⋅∘C)4200\text{ J}/(\text{kg}\cdot^\circ\text{C})4200 J/(kg⋅∘C).)

A

21 000 J21\,000\text{ J}21000 J

B

25 200 J25\,200\text{ J}25200 J

C

63 000 J63\,000\text{ J}63000 J

D

88 200 J88\,200\text{ J}88200 J

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2.2 Thermal properties and temperature Questions

  1. IGCSE
  2. /Physics
  3. /2.2 Thermal properties and temperature

528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.

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