A compressed-air test rig contains four flat sensor plates. Air touches one face of each plate as shown in the table.
| Plate | Position of plate | Face touched by the air |
|---|---|---|
| P | horizontal | lower face |
| Q | horizontal | upper face |
| R | vertical | west-facing face |
| S | vertical | north-facing face |
Which plate has a force from the air pressure acting vertically upwards?
Plate P
Plate Q
Plate R
Plate S
108 exam-style questions on AQA GCSE Physics 5.5 Pressure and pressure differences in fluids, covering 5.5.1 Pressure in a fluid and 5.5.2 Atmospheric pressure. Each one has a worked solution and a mark scheme showing where the marks go.