QuickCalci Formulas

Wave Equation — Worked Examples

Five real-world examples demonstrating the Wave Equation formula (v=fλ).

1

Middle A Note (440 Hz, sound)

Musical pitch A4 in air

Inputs

f 440

lam 0.78

Result

v 343.20

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2

FM Radio (100 MHz → λ≈3m)

Approximate FM broadcast

Inputs

f 100

lam 3

Result

v 300.00

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3

Submarine Sonar (1000 Hz)

Active sonar in seawater (v≈1500 m/s)

Inputs

f 1000

lam 1.5

Result

v 1500.00

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4

Earthquake Wave (5 Hz)

Seismic surface wave

Inputs

f 5

lam 500

Result

v 2500.00

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5

Ultrasound Imaging (2 MHz)

Medical diagnostic frequency

Inputs

f 2000

lam 0.77

Result

v 1540.00

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