An ultrasonic wave with a frequency of 2 MHz propagates in psexiglass at a speed of 2.8 km / s. Determine the wavelength.

univerkov | April 27, 2021 | education

Initial data: ν (ultrasonic wave frequency) = 2 MHz = 2 * 10 ^ 6 Hz; λ (the speed with which the ultrasonic wave propagates in plexiglass) = 2.8 km / s = 2.8 * 10 ^ 3 m / s.

The length of the ultrasonic wave can be determined by the formula: λ = υ / ν.

Let’s perform the calculation: λ = 2.8 * 10 ^ 3 / (2 * 10 ^ 6) = 1.4 * 10 ^ -3 m = 1.4 mm.

Answer: The ultrasonic wavelength in plexiglass is 1.4 millimeters.

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