Physics Key Equations and Units Flashcards
What is the Equation for Power?
Power = Voltage x Current (P = V x l)
What is the Equation for Voltage?
Voltage = Current x Resistance (V = I x R)
What is the equation for Charge?
Charge = Current x Time (Q = I x T)
What is the equation for Energy?
Energy = Voltage x Charge (E = V x Q)
What is the other equation for Energy?
Energy = Voltage x Current x Time (E = V x I x T)
What is the Transformer Equation?
Primary Voltage/ = Number of Turns on Primary Coil/
Secondary Voltage= Number Turns on Secondary Coil
What is the Equation for Total Cost?
Number of Units x Cost Per Unit
What is the Equation for Efficiency (%) ?
(Useful Energy Out ÷ Total Energy in) x 100
What is the equation for GPE?
GPE = mgh or GPE= Mass x Gravity x Height
What is the equation of Kinetic Energy (KE)?
Kinetic Energy = 0.5 x Mass x Velocity² or KE = 1/2mv²
What is the equation for Work Done (W)?
Work Done = Force x Distance or W= F x d
What does Work Done also equal?
Work Done is also equal to Energy transferred
What is the equation for Power?
Power = Energy / Time or P = E / t
What is the Equation for Energy (relative to Specific Heat Capacity)?
Energy = Specific Heat Capacity x Mass x Change in Temperature or E = c x m x θ
What is the Equation for Speed?
Speed = Distance ÷ Time or s = d ÷ t