A Spool of Thread Has an Average Radius of 1

question 53

Multiple Choice

A spool of thread has an average radius of 1.00 cm.If the spool contains 142 m of thread,how many turns of thread are on the spool? "Average radius" allows us to not need to treat the layering of threads on lower layers.

• A) 3,600
• B) 4,500
• C) 2,300
• D) 1,100
• E) ​23

---

Definitions:

Perceptual Cues

External hints or signals that can be perceived by the senses, used to identify or infer information about the environment.

Perceptual Illusions

Misinterpretations or misunderstandings of how our senses perceive the environment.

Figure-Ground

A visual perception principle where the viewer can distinguish an object (the figure) from its surrounding environment (the ground).

Proximity

Proximity refers to the physical or psychological closeness between people, objects, or ideas, influencing interactions and relationships.