Equations Flashcards
Absolute pressure
Gauge pressure + atmospheric pressure
Acceleration
(Final velocity - initial velocity)/time
OR
Change in velocity/time
Actual mechanical advantage (AMA)
Force out / force in
Area Expansion
2 x coefficient of linear thermal expansion x change in temperature
Boyle’s Law
Pressure x volume = constant
Buoyant force
Weight of the fluid displaced
Charles’s Law
Volume/temperature = constant
Buoyancy
Object density/fluid density
Centripetal acceleration
Velocity^2 / radius
Combined gas law
(Pressure x volume)/temperature = constant
Centripetal force
(Mass x velocity^2) / radius
Density
Mass/volume
Clockwise moment
Anti-clockwise moment
Distance
1/2 x (initial velocity + final velocity) x time
OR
(Initial velocity x time) + (1/2 x acceleration x time^2)
OR
(Final velocity x time) - (1/2 x acceleration x time^2)
Elastic Collision
(mass1 x initial velocity1) + (mass2 x initial velocity2) = (mass1 x final velocity1) + (mass2 x final velocity2)
Entropy
Heat energy absorbed/ temperature
Efficiency
(Useful output/total input) x 100
Force
Mass x acceleration
Frequency
1 / periodic time
Friction
Coefficient of friction x normal force
OR
Coefficient of friction x weight
Gay Lussac’s law
Pressure/temperature = constant
Ideal mechanical advantage
Distance in / distance out
Heat capacity
Heat energy added / change in temperature
Inelastic collision
(Mass1 x initial velocity1) + (mass2 x initial velocity2) = (mass1 + mass2) x velocity of the body after the collision
