The unit of impedance is the:

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

The unit of impedance is the:

Explanation:
Impedance in acoustics is the ratio of acoustic pressure to particle velocity, Z = p/v. Since pressure has units of Pa (N/m^2) and velocity has units of m/s, the resulting units are (N/m^2) ÷ (m/s) = N·s/m^3, which simplifies to kg/(m^2·s). This unit is called the Rayl, commonly written as Pa·s/m. So the unit of impedance is Rayl. For contrast, a Joule is energy, Watt per square centimeter is power flux density, and a Newton is force, none of which capture the pressure-to-velocity relationship. For example, if p = 100 Pa and v = 0.5 m/s, Z = 200 Rayls.

Impedance in acoustics is the ratio of acoustic pressure to particle velocity, Z = p/v. Since pressure has units of Pa (N/m^2) and velocity has units of m/s, the resulting units are (N/m^2) ÷ (m/s) = N·s/m^3, which simplifies to kg/(m^2·s). This unit is called the Rayl, commonly written as Pa·s/m. So the unit of impedance is Rayl. For contrast, a Joule is energy, Watt per square centimeter is power flux density, and a Newton is force, none of which capture the pressure-to-velocity relationship. For example, if p = 100 Pa and v = 0.5 m/s, Z = 200 Rayls.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy