Pressure + Upthrust Flashcards
1
Q
What is pressure defined
A
force per unit of area
2
Q
What is the equation for pressure
A
force / Area = pressure in pascals
3
Q
What happens to pressure deeper in water
A
pressure increases on objects
4
Q
What is the equation for pressure in a liquid
A
p = density x height x gravitational field strength
5
Q
What forces are exerted on a box underwater
A
molecules of water from all directions
BUT
more exerted on bottom of box which causes resultant force of upthrust
6
Q
What are the two factors to consider if an object will float
A
object weight
upthrust
7
Q
What can we compare to easily decide if an object will sink or float
A
the density of it vs density of liquid it is in
8
Q
Where is density of gas highest in out atmospher
A
highest at surface
9
Q
What is the equation for boyles law
A
p1 v1 = p2v2
