Conservation of Angular Momentum: a Turntable Has a Radius of 0.80

question 19

Multiple Choice

Conservation of angular momentum: A turntable has a radius of 0.80 m and a moment of inertia of 2.0 kg · m². The turntable is rotating with an angular velocity of 1.5 rad/s about a vertical axis though its center on frictionless bearings. A very small 0.40-kg ball is projected horizontally toward the turntable axis with a velocity of 3.0 m/s. The ball is caught by a very small and very light cup-shaped mechanism on the rim of the turntable (see figure) . What is the angular velocity of the turntable just after the ball is caught?

• A) 2.1 rad/s
• B) 1.3 rad/s
• C) 0.94 rad/s
• D) 0.75 rad/s
• E) 0.30 rad/s

Understand bias types in surveys and their implications.

Distinguish between voluntary response sampling and convenience sampling.

Understand the importance of pilot testing in survey design.

Recognize the differences in sampling for demographic versus opinion surveys.

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Definitions:

Goethe

Johann Wolfgang von Goethe, a German writer, poet, playwright, and thinker, known for his contributions to literature, philosophy, and science.

Cultural Identity

The sense of belonging to a group or culture, defined by shared traditions, languages, and values.

Honor

A concept that encompasses the integrity, respect, and esteem that an individual or group is regarded with by others.

Iliad

An ancient Greek epic poem attributed to Homer, recounting the significant events of the last weeks of the Trojan War and the Greek siege of the city of Troy.