A Certain Radioactive Isotope Decays to One Fourth of Its

question 61

Multiple Choice

A certain radioactive isotope decays to one fourth of its original amount in 4.0 hours.How long would it take for 20% of it to decay?

• A)0.40 hours
• B)0.56 hours
• C)0.64 hours
• D)0.85 hours

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Definitions:

Texture Gradient

A visual cue indicating depth by the gradual change of an object's texture as it recedes from the viewer.

Proximity

The physical or psychological closeness between people, which can influence attraction and interpersonal relationships.

Gestalt Laws

Principles of cognitive psychology that describe how humans naturally organize visual elements into groups or unified wholes.

Proximity

The physical or symbolic closeness of objects or individuals, influencing relationships and perception.