gen sci reviewer

fluids

substance that doesn't havr fixed shape and can flow from one place to another

tangential stress

circumference of curve element

shear modulus

measure materials

stiffness

deformation of materials

ideal fluid

no viscosity, no internal friction

real fluid

w some viscosity, imaginary

5 examples of real fluid?

water air oil blood honey

water

it flows easily and is essential for life

air

compressible fluid that flows and fills the space of container

oil

flows slowly compared to water

blood

biological fluid circulates through the body

honey

example of a non-newtonian fluid

microscopic level

fluid is governed by the relative mobility of its molecules

intermolecular forces

allowing them to move past one another freely

pascal’s law

enables fluid to transmit pressure in all directions

viscosity

measure of a fluid’s resistance to flow

high viscosity

molecules have a lot of friction, making it flow slowly

low viscosity

molecules slide past each other easily

hydraulic jack

device used to lift heavy objects

density

important indicator of whether an object floats or sink

pushing everywhere at once

pascal’s principle

the trade off (size matters)

how complex machine like excavators or car brakes get their stregth

two pistons of hydraulic systems

small

large

small

u push this one over a long distance with a little bit of force

large

the fluid has more space to push against

energy production

most power plants

transportation and aerodynamics

allows us to travel across the globe

human body

largely made of fluids

P?

p=m/v

m?

m= (p) (v)

v?

v=m/p

units of volume

liters, mL, cm³, m³

units of mass

kg, g

unit of density

kg/cm³