Equations Flashcards
1
Q
State the Suvat equations
A
- s = (u+v)t / 2
- a = v-u / t
- s = ut + 1/2at2
- v2 = u2 + 2as
2
Q
State the Forces equations
A
- F = ma
- g = F / m
- W = mg
- Moment = Fd
- F = mv - mu / t
3
Q
State the momentum equations
A
- p = mv
- m1v1 = m2v2
- Change in p of one object = final p - initial p
4
Q
State the Work, Energy and Power equations
A
- W = Fd
- KE = 1/2mv2
- GPE = mgh
- P = E/t
- P = W/t
- Efficiency = useful E output / Total E input
- Efficiency = useful P output / Total P input
- P = Fv
5
Q
What is the equation for p.d?
A
- V = E/Q
6
Q
What is the resitance equations?
A
- R = V/I
- RT = R1 + R2
- 1/RT = 1/R1 + 1/R2
7
Q
What are the equations for electrical power, energy and efficiency?
A
- P = IV
- P = I2R
- P = V2/R
- W = IVt
8
Q
What is the resistivity equation?
A
- R = pl / A
9
Q
What is the equation for current?
A
- I = Q/t
- I = nAve
10
Q
What is the density equation
A
- p = m / V
11
Q
What is Stokes law equation?
A
- F = 6πnrv
12
Q
What is Hooke’s Law equation?
A
- F = kx
13
Q
What is the pressure equation?
A
- p = F / A
14
Q
What are Youngs modulus equations?
A
- Stress = F / A
- Strain = extension / length
- Youngs modulus = Stress / Strain
15
Q
What is the equation for elastic strain energy?
A
- Eel = 1/2Fx
