The Equation That Gives the Particle Displacement of a Medium $\pi$

question 82

Multiple Choice

The equation that gives the particle displacement of a medium in which there is a simple harmonic progressive wave is
Y(x, t) = (2/ $\pi$ ) sin $\pi$ (x - 4t) ,
Where the units are SI. At t = 2 s, the velocity of a particle at x = 10 m is

• A) 0
• B) 2 m/s
• C) 4/\(\pi\) m/s
• D) 4 m/s
• E) 8 m/s

---

Definitions:

KABC-II

The Kaufman Assessment Battery for Children, Second Edition (KABC-II) is a comprehensive cognitive assessment tool for children that evaluates processing and cognitive abilities.

Wechsler Scales

A set of standardized tests designed to measure intelligence and cognitive ability in children and adults.

Cattell-Horn-Carroll Model

A comprehensive framework of human cognitive abilities that combines the theories of Raymond Cattell, John Horn, and John Carroll, identifying broad and narrow abilities.

Fluid Intelligence

The capacity to reason quickly and think abstractly, enabling problem-solving and the ability to learn new information.