The Frequency Separating Audible Waves and Ultrasonic Waves Is Considered

question 6

Multiple Choice

The frequency separating audible waves and ultrasonic waves is considered to be 20 kHz.What wavelength in air at room temperature is associated with this frequency? (Assume the speed of sound to be 340 m/s. )

• A) 0.59 cm
• B) 1.7 cm
• C) 34 cm
• D) 55 cm

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Definitions:

Inflation Reduction

A decrease in the rate at which the general level of prices for goods and services is rising.

Moderate Inflation

A stable and low level of inflation, which is considered beneficial to economic growth by encouraging spending and investment.

Inflation Reduction

Efforts and policies aimed at decreasing the rate at which prices for goods and services rise.

Central Bank

The primary monetary authority of a country or region, responsible for regulating the money supply, issuing currency, and managing interest rates to ensure economic stability.