Formula sheet: Physics - v2.0

Electricity

Basics:P = UI (1)

U = IR (2)

Parallel circuit:1

Rv=

1

R1+

1

R2+

1

R3+ ... (3)

Series circuit:Rv = R1 +R2 +R3 + ... (4)

Thermodynamics

Ideal gas law:pV

T= nR (5)

p = ρRT (6)

Heat energy:Q = cm∆T (7)

Q = C∆T (8)

Heat transfer rate:q = cm∆T (9)

Mass flow:m = ρAV (10)

Pressure in a fluid:p = ρgh (11)

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Mechanics

Gravitational force:Fg = mg (12)

Fg =Gm1m2

r2(13)

Kinetic energy:

Ek =1

2mV 2 (14)

Potential energy:Ep = mgh (15)

Spring force and energy:Fs = Cu (16)

Es =1

2Cu2 (17)

Centripetal force and acceleration:

Fcp =mV 2

r(18)

acp =V 2

r(19)

Vibrations and Waves

Wavelength:λ = vT (20)

Period of a pendulum and mass-spring system:

T = 2π

√L

g(21)

T = 2π

√m

C(22)

Maximal velocity harmonic motion:

vmax =2πA

T(23)

Notes:

• Temperatures are in Kelvin (-273.15◦C equals 0K).

• Required constants will be provided in the question.

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