Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
31–40 of 279
Question 31
3 marks · Normal
Answer and see the solution →A man stands on one foot. His mass is 72 kg. The area of the sole of his foot is 0.032 m^2. Calculate the pressure he exerts on the floor. Take g = 10 N/kg.
Question 32
2 marks · Normal
Answer and see the solution →Table showing force and area for four objects on the ground. Object Force (N) Area (m^2) A 500 2.0 B 400 1.0 C 800 4.0 D 900 3.0 Which object exerts the greatest pressure on the ground? Show how you decided.
Question 33
2 marks · Easy
Answer and see the solution →A block has a mass of 10 kg and is placed on the ground, covering an area of 0.02 m². Calculate the pressure the block exerts on the ground. (Take gravitational field strength ).
Question 34
1 mark · Easy
Answer and check →Which of the following will increase the pressure at the bottom of a liquid tank?
- A.Increasing the depth of the liquid
- B.Decreasing the density of the liquid
- C.Decreasing the gravitational field strength
- D.Decreasing the area of the tank base
Question 35
3 marks · Easy
Answer and see the solution →A science teacher uses a can with small holes around the sides and fills it with water to demonstrate liquid pressure.
(a)[1 mark]Describe what you would observe as water flows out of the holes when the can is full.
(b)[2 marks]Explain what this demonstrates about pressure in liquids.
Question 36
2 marks · Easy
Answer and see the solution →Calculate the pressure 5 metres below the surface of a swimming pool. (Density of water , ).
Question 37
1 mark · Easy
Answer and see the solution →State the unit of pressure in the SI system.
Question 38
2 marks · Easy
Answer and see the solution →Explain why a sharp knife cuts more easily than a blunt one, using ideas about pressure.
Question 39
1 mark · Easy
Answer and see the solution →State what causes atmospheric pressure.
Question 40
2 marks · Easy
Answer and see the solution →A laboratory set of Magdeburg hemispheres has a surface area of 0.04 m². The atmospheric pressure is 100,000 Pa.
(a)[2 marks]Calculate the total force of the atmosphere on the outside of the hemispheres.