Physics formulas

What is the formula for force in terms of mass, speed and radius?

F = (mv²) / r

What is the formula for force in terms of mass and acceleration?

F = ma

What is the formula for weight?

W = mg

What is the formula for force in terms of extension and spring constant?

F = kx

What is the formula for pressure?

p = F / A

What is the formula for moment?

Moment = F x d

What is the formula for impulse?

∆p = F∆t

What is the formula for momentum?

p = mv

What is the formula for change in pressure within a liquid?

∆p = ρg∆h

What is the formula for specific heat capacity?

C = ∆E / m∆θ

What is the equation for kinetic energy?

Ek = ½ mv²

What is the equation for gravitational potential energy?

ΔEp = mgΔh

What is the equation for mechanical work done?

W = Fd = ΔE

What are the two equations for power?

P = W / t and P = ΔE / t

What is the equation for wave speed?

v = f λ

What are the two equations for the refractive index?

n = sin i / sin r and n = 1 / sin c

What is the formula for voltage in terms of work done and charge?

V = W / Q

What is the formula for e.m.f in terms of work done and charge?

E = W / Q

What is the formula for current in terms of charge and time?

I = Q / t

What is the formula for resistance in terms of voltage and current?

R = V / I

What is the formula for electrical power?

W = IV

What are the two formulas for energy transferred?

E = IVt and E = Wt

What is the formula for cost in terms of KWh?

Cost = E (KWh) x Price per KWh

What is the formula for total resistance in a series circuit?

R_total = R₁ + R₂ + R₃ + …

What is the formula for combined resistance in a parallel circuit?

1 / R_total = 1/R₁ + 1/R₂ + …

What is the formula used for transformers?

V_p / V_s = N_p / N_s

What is the formula for a 100% efficient transformer?

I_pV_p = I_sV_s

What is the formula for power loss?

P = I²R