P11 - Pressure

Question 1

word equation for pressure

Answer 1

pressure = force/area

Question 2

symbol equation for pressure

Answer 2

P = F/A

Question 3

what is pressure measured in

Answer 3

pascals

Question 4

what systems use air/water to transmit force

Answer 4

hydraulic/pneumatic

Question 5

is hydraulic or pneumatic better and why

Answer 5

hydraulic because it is incompressible

Question 6

word equation for pressure in a liquid

Answer 6

Pressure = height x density x gravity (weight of liquid above you)

Question 7

symbol equation for pressure in a liquid

Answer 7

P = pgh

Question 8

Why does atmospheric pressure decrease exponentially when you increase in altitude

Answer 8

height of air above you decreases, and air is less dense because it is less compressed because there is less air above it pushing it down

Question 9

formula for upthrust

Answer 9

upthrust = weight of fluid displaced

Question 10

what is upthrust

Answer 10

the force applied to an object when it displaces a fluid