Physics Calculators (Page 9)

Velocity, mechanics, energy, electricity and physics tools.

Enter the initial amount N₀, elapsed time t, and half-life T½ to compute the remaining radioactive material instantly using N = N₀·(1/2)^(t/T½).

Compute the uncertainty product Δx·Δp ≥ ħ/2.

Compute the observed frequency f' = f·(v ± v_o)/(v ∓ v_s).

Enter a speed to compute the Lorentz factor γ = 1/√(1 − v²/c²) of special relativity.

Enter the incident light intensity and the angle between polarizers to compute the transmitted intensity I = I₀·cos²θ.

Enter central mass and orbital radius to compute the circular orbital velocity v = √(G·M/r).

Compute centripetal acceleration a = v²/r = ω²r.

Enter fall time and gravity to compute the distance fallen and final velocity under gravity (no air resistance).

Compute the ideal Carnot efficiency η = 1 − T_c/T_h.

Compute capacitance C = Q/V from charge and voltage.

Enter voltage and current to compute electrical power P = V·I instantly.

Find resistivity from resistance, length and area, or resistivity from temperature. Copper ρ≈1.68e-8 Ω·m; L=1 m, A=1e-6, R≈0.0168 Ω.