P11 - Force and Pressure (PAPER 2) Flashcards
What is the formula for pressure
pressure = Force / Area
What is the unit for pressure
Pascal (pa)
1 Pa = 1 N/m^2
What is the correlation between pressure in a liquid and its depth
the higher the liquid depth, the more pressure
The pressure along a horizontal line in a liquid is ___
constant
what is the correlation between density and pressure in a liquid
the greater the density, the greater the pressure
What is the formula for pressure in a liquid
pressure = depth x liquid density x gravitational field sterngth
what is the approximate force on a square metre of surface at sea level
≈100 000N
What is the correlation between altitude and pressure
the higher the altitude, the less pressure
What is upthrust on an object
an upward force on the object caused by the pressure of the liquid
What condition makes an object float
when its weight is less than the upthrust on it when it is fully immersed
