pressure in liquids and upthrust Flashcards
1
Q
what effect does deep sea diving have on the body?
A
all organs containing air are compressed due to the amount of pressure
2
Q
why can’t liquids be compressed?
A
the particles are already close together
3
Q
what is hydraulics?
A
when you use water to do work
4
Q
what is pneumatics?
A
work using gas
5
Q
what is the principle behind the hydraulic system?
A
pascals law, pressure distributed evenly
6
Q
what is upthrust?
A
the force that pushes an object upwards in a liquid or a gas, also called buoyancy
7
Q
how do you measure density?
A
density = mass/volume
