Question 1 A transparent piston-cylinder device, whose piston is resting on a set of stops, initially contains 8 m of air at 100 kPa and 30 °C. The mass of the piston contributes to a force of 10 N and the radius of the cylinder is 32 mm. (a) Draw the diagrams of forces acting on the piston shown in Figure 1. Heat is now transferred to the air from the sun at a total amount of 30,000 J. (b) Sketch the graph of pressure versus volume as in Figure 2 with correct labels. (c) Determine the final temperature. Air 100 kPa Air 100 kPa 30°C 8 m3 Figure 1 (kPa) 2 3 ? 100 1 V (m³) 8 Figure 2

Question 1 A transparent piston-cylinder device, whose piston is resting on a set of stops, initially contains 8 m of air at 100 kPa and 30 °C. The mass of the piston contributes to a force of 10 N and the radius of the cylinder is 32 mm. (a) Draw the diagrams of forces acting on the piston shown in Figure 1. Heat is now transferred to the air from the sun at a total amount of 30,000 J. (b) Sketch the graph of pressure versus volume as in Figure 2 with correct labels. (c) Determine the final temperature. Air 100 kPa Air 100 kPa 30°C 8 m3 Figure 1 (kPa) 2 3 ? 100 1 V (m³) 8 Figure 2