🌙 • Lesson 4.1 : Equations Recap Flashcards
(21 cards)
Formula to find Weight?
Weight = mass (kg) x gravitational field strength (N/kg)
(Grav. Field strength on earth = 10N/kg)
Formula to find Force?
Force = mass x acceleration
Formula to find Mass?
Mass = density x volume
Formula to find Force?
(Hooke’s Law)
Force = spring constant x extension
Formula to find Force?
Force = pressure x area
Formula to find Distance?
Distance = average speed x time
Formula for Acceleration?
Acceleration = (end speed - start speed)/time taken
(Acceleration of free-fall on earth = 10m/s²
Formula to find GPE?
GPE = mass x gravitational field strength x height
Formula to find Kinetic Energy?
Kinetic Energy = 1/2 x mass x (velocity)²
Formula to find useful energy output?
Useful energy output = total energy input x efficiency
(Efficiency as a decimal)
Formula to find work done?
Work done = force x distance
Formula to find Energy?
Energy = power x time
Formula to find Energy Input?
Energy input = mass x specific heat capacity x temperature rise
Formula to find Speed in waves?
Speed = frequency x wavelength
Formula to find Charge?
Charge = current x time
Formula to find Voltage?
(Potential difference)
Voltage = current x resistance
Formula to find Power?
Power = current x voltage
Formula to find Moles?
Moles = Mass (g) ÷ Relative Molecular Mass
Formula for light year distances?
Time = Distance/Speed of light
Speed of light = 3.00 x 10^8m/s
Formula for same resistors in parallel circuits?
1/R total = 1/R1 + 1/R2 + …
Formula for density?
P = mass / volume
