Physics

Question 1

isobaric

Answer 1

process that occurs at constant pressure, area under the curve is equal to the work done on the piston by the gas, pressure is constant but volume changes

Question 2

isochoric

Answer 2

the volume is kept constant so no work is done

Question 3

isothermal

Answer 3

temperature is allowed to escape, so as temperature stays constant, pressure must decrease, work is still the area under the curve

Question 4

adiabatic

Answer 4

when no heat is transferred between system and enviornment

Question 5

specific gravity

Answer 5

density of substance / density of water

Question 6

hydrostatic gauge pressure

Answer 6

the pressure exerted by a liquid, hydrostatic = not moving, gauge = dont factor in air

gauge pressure = density of fluid * g * depth

Question 7

archimedes principle

Answer 7

the magnitude of the buoyant force is equal to the weight of the fluid displaced by the object

Question 8

flow rate vs flow speed

Answer 8

flow rate tells how much fluid flows per unit time and flow speed gives velocity of fluid

Question 9

continuity equation

Answer 9

as cross sectional area decreases, speed of a liquid increases

Question 10

ideal fluid flow

Answer 10

1. fluid in incompressible
2. negligible viscosity
3. laminar flow
4. flow rate is steady

This means total mechanical energy is conserved

Question 11

bernoulli’s equation

Answer 11

pressure + 1/2 * density * flow speed^2 + density * g *y

Question 12

pressure through a tube

Answer 12

a smaller area results in a higher speed, but a lower pressure

Question 13

adjustements for real gas equation

Answer 13

pressure and volume, real gases have higher volumes and lower pressures