EQUATIONS Flashcards
How is Acceleration calculated?
Final Velocity-Initial Velocity (change in velocity) / time
How is Density calculated?
Mass of object / Volume of solvent
★How is Speed calculated?
Distance / Time
How is momentum calculated?
mass (kg) x velocity (m/s)
How is the resultant force calculated?
change in momentum : change in time
How is impulse calculated?
force (N) x change in time (s)
impulse=change in momentum
★How is efficiency calculated?
useful energy output : total energy input x 100
★How is the gravitational potential energy calculated (GPE)?
mass x gravity x height
★How is the Kinetic energy calculated?
(mass : 2) x (velocity²)
★GPE at the top = …
KE at the bottom
★What is the equation for pressure and volume?
P₁V₁ = P₂V₂
★How is work calculated?
force (N) x distance (m)
or △energy
★How is power calculated?
△energy
౼౼౼౼౼౼
time
or work ౼౼౼౼ time
★How is specific heat capacity calculated?
specific heat capacity (J/Kg ºC) =
energy required (J) ౼౼౼౼౼౼౼౼౼౼౼౼౼౼౼౼౼౼౼ mass (Kg) x temp. increase (ºC)
★How do you convert between Kelvin and Celcius?
Kelvin = Celcius + 273.15
Celcius= Kelvin - 273.15
How is weight calculated?
mass * gravity
How is gravity and acceleration of free fall calculated?
weight / mass???? mr. wides didn’t teach us…
How is moment of a force calculated?
force * perpendicular distance from pivot
How is spring constant calculated?
force / unit extension
How is pressure calculated?
force / area
How is change in pressure calculated?
density * acceleration * depth
How is the refractive index calculated?
n = sin i / sin r
How is the critical angle calculated?
n = 1/sin c
How is wave speed calculated?
frequency * wavelength
How is frequency calculated?
1 / period
How is period calculated?
1 / frequency
