Describe the experimental setup (including the electrical circuit) of the apparatus you would use to measure the specific heat capacity of a liquid using an electrical method.
List the quantities you would need to measure, or previously know, in order to calculate the specific heat capacity of the liquid.
A sample of ethanol has a specific heat capacity of 2400 J/(kg⋅∘C)2400\text{ J}/(\text{kg}\cdot^\circ\text{C})2400 J/(kg⋅∘C) and a boiling point of 78.0∘C78.0^\circ\text{C}78.0∘C.
Calculate the energy required to raise the temperature of 1.25 kg1.25\text{ kg}1.25 kg of this ethanol from 18.0∘C18.0^\circ\text{C}18.0∘C up to its boiling point. State the equation that you use.
The energy to raise the temperature in (b)(i) is supplied at a rate of 400 W400\text{ W}400 W. Calculate the time taken to raise the ethanol to its boiling point.
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.