The Information on a Compact Disc Is Scanned by a Laser

question 101

Multiple Choice

The information on a compact disc is scanned by a laser initially at a radius of 2.4 cm and then out to a maximum of 6.0 cm.Because the dimensions of the pit information remains constant with radius the disk motor adjusts so that the tangential velocity remains a constant.What is the ratio of the inner to outer rotational frequencies?

• A)0.16
• B)6.3
• C)1.0
• D)2.5
• E)0.40

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Definitions:

Milgram Experiment

A psychological experiment conducted by Stanley Milgram in the 1960s to study obedience to authority, where participants were instructed to administer electric shocks to another person.

Stanford University Prison Experiment

A psychological study conducted by Philip Zimbardo in 1971 at Stanford University, where students were assigned roles of prisoners and guards to explore the effects of perceived power.

Generalization

Drawing a conclusion about a certain characteristic of a population based on a sample from it.

Logical Support

The provision of reasons or evidence to justify a claim or argument.