Physics chapter 6 Flashcards
What is Boyle’s law?
When temp is constant.
The changes in values of pressure and volume are indirectly proportional.
What is Charles law?
When pressure is constant,
Changes in Volume and temp are directly proportional.
What is convection?
The mixing of fluid molecules of different temperatures by way of circulation
What is conduction?
The heating of molecules by direct contact
What is entropy?
The amount of energy in a system that is unavailable for work
-lowest amount of organization in the system
What is evaporation?
He is taken from the air surrounding the liquid cooling the air
What is condensation?
A gas turns back into a liquid because of vaporization takes heat from the air around the liquid and condensation must give it back to the surroundings
What is buoyancy?
The liquid below an object exerts pressure that exceeds the area above it causing it to float
What is viscosity?
The force opposing a fluid’s flow. Cohesive forces between fluid molecules
What is absolute humidity?
The maximum amount of water vapor in a gas at a given temperature
What is the absolute humidity of water vapor at 37C and 760mm Hg?
What’s it water vapor pressure?
43.8 mg/L
47 mm Hg
What is relative humidity?
The ratio of the actual water vapor content over its saturated capacity at a given temperature
What is STPD?
What are the values?
Standard temperature and pressure dry
0 Celsius
760 mm Hg
What do fluids flowing in a laminar pattern do?
Driving pressure increases whenever The fluid viscosity, tube length or flow increases
You need more pressure to maintain that flow
How does laminar flow become turbulent?
4 things
- increased fluid velocity
- increased fluid density
- increased tube radius
- decreased fluid viscosity
