BBC1 个月
How to show the difference between force and pressure
Each kg of mass is pulled down by the Earth with a force of 10 N. We can then calculate pressure using: pressure = force ÷ area. If you stand on one foot (rather than both feet), the pressure ...
BBC1 年
How to show pressure exists in liquids
Key points How does water pressure increase with depth? How does water pressure work? Who needs to know about water pressure? Test your knowledge ...