Physics (AS & A Level) · Oct / Nov 2018 · Paper 52 · Question 1

A student is investigating how the rate at which water evaporates varies with temperature. It is suggested that the relationship between the volume of water evaporated per unit time Y and the Celsius temperature θ of the water is Y = kθ s where k and s are constants. Design a laboratory experiment to test the relationship between Y and θ. Explain how your results could be used to determine values for k and s. You should draw a diagram, on page 3, showing the arrangement of your equipment. In your account you should pay particular attention to • the procedure to be followed, • the measurements to be taken, • the control of variables, • the analysis of the data, • any safety precautions to be taken. 3 Diagram 4 [15]

Read automatically from the paper; the printed page above is exact.