Question 4
FA student heats 0.50 kg of a liquid using an electric heater. The heater transfers 40 J of energy each second. The student records the temperature of the liquid every 50 s. The liquid does not boil.
Figure: A graph of the temperature of the liquid against the time for which it was heated
a.[2]
Use the graph to determine the rise in temperature of the liquid during the first 200 s.
b.[2]
Calculate the energy transferred to the liquid by the heater in 200 s.
c.[3]
Use your answers to parts a) and b) to calculate the specific heat capacity of the liquid.
3.2 Internal energy and energy transfers Questions
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.