Tiêu đề 5.Pressure.pdf ✅

Topic 5 – Pressure Page | 1 IGCSE Physics 0625 Paper 2 Pastpapers-2020 www.HakimAbbas.site Topic 5 – Pressure 1 1 2 2Air is trapped in a cylinder by a piston. The original volume of the trapped air is V and the original pressure of the trapped air is P. The piston is pushed to the left. The temperature of the gas does not change. before piston is pushed in after piston is pushed in piston cylinder 25 50 25 50 trapped air trapped air What is the new volume and what is the new pressure of the trapped air? new volume new pressure A 2V P 2 B 2V 2P C V P 2 2 D V 2P 2

Topic 5 – Pressure Page | 3 IGCSE Physics 0625 Paper 2 Pastpapers-2020 www.HakimAbbas.site 5 5 The diagram shows a manometer containing a liquid. The manometer is used to find the difference between the pressure of a gas and atmospheric pressure. Which distance represents this pressure difference? gas pressur e A C D B liquid 6 6Four physics teachers investigate pressure. They wear identical clothes and lie on different beds of nails. The table gives the weight of each teacher and the total area of contact between the teacher and the nails. Which teacher experiences the least pressure from the nails? weight of total area of teacher / N contact / cm2 A 700 13 B 800 20 C 900 14 D 1000 21 7 7A man stands on the ground. Which action will increase the pressure that the man exerts on the ground? A The man slowly bends his knees. B The man slowly lies down on the ground. C The man slowly raises his arms. D The man slowly raises one foot off the ground.
Topic 5 – Pressure Page | 4 IGCSE Physics 0625 Paper 2 Pastpapers-2020 www.HakimAbbas.site 8 8A cylinder of constant volume contains a fixed mass of gas. The gas is cooled What happens to the pressure of the gas and what happens to the kinetic energy of the gas molecules? pressure of gas kinetic energy of molecules A decreases decreases B decreases increases C increases decreases D increases increases 9 9The diagram shows three different containers J, K and L. Each container contains water of the same depth. Which statement about the pressure of the water on the base of each container is correct? A The water pressure is greatest in container J. B The water pressure is greatest in container K. C The water pressure is greatest in container L. D The water pressure is the same for all three containers. 10 10A water manometer is connected to a gas supply. There is a gas leak and the pressure of the gas supply falls. J K L water gas supply P Q