page 42 13. (continued) (b) The student repeats the experiment with a different liquid. The pressure meter is set to zero before the glass tube is lowered into the liquid. The student takes measurements of the pressure at various depths below the surface of the liquid. The student records the following information. Depth, h (m) Pressure, p (kPa) 0·10 1·2 0·20 2·5 0·30 3·6 0·40 4·9 0·50 6·2 (i) Using the square-ruled paper on page 43, draw a graph of p against h. (Additional graph paper, if required, can be found on page 44.) (ii) Calculate the gradient of your graph. Space for working and answer (iii) Determine the density of this liquid. Space for working and answer [END OF QUESTION PAPER] 3 2 2 page 43 page 44 page 45 MARKS DO NOT WRITE IN THIS MARGIN ADDITIONAL SPACE FOR ANSWERS AND ROUGH WORK Additional graph for use with Question 7 (c) kinetic energy (J) frequency (× 1015 Hz) 1∙05 0 Additional diagram for use with Question 9 (b) (iii) glass air incident ray 45·0° 45·0° 68·0° 22·0° 60·0° 60·0° 60·0° page 46 MARKS DO NOT WRITE IN THIS MARGIN ADDITIONAL SPACE FOR ANSWERS AND ROUGH WORK page 47 MARKS DO NOT WRITE IN THIS MARGIN ADDITIONAL SPACE FOR ANSWERS AND ROUGH WORK