A Longitudinal Wave Travels on a Slinky or Any Long

question 81

Multiple Choice

A longitudinal wave travels on a slinky or any long spring. The wave is represented by the equation x(x, t) = 2.1 cm cos(2000 rad/s t − 40 m⁻¹ x) . What is the direction of propagation of the wave?

• A) the − x direction
• B) the + x direction
• C) the − y direction
• D) the + y direction

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Definitions:

Auxin

A class of plant hormones that regulates growth and facilitates various developmental processes, including cell elongation.

Stolons

Horizontal connections between organisms, especially plants, that allow for asexual reproduction and the spread of the organism.

Tissue Culture

A technique of growing cells, tissues, or organs in a controlled environment outside of their natural environment.

Protoplasts

Plant, bacterial, or fungal cells that have had their cell wall removed, exposing the cell membrane and internal contents.