Three Pith Balls Supported by Insulating Threads Hang from a Support

question 2

Multiple Choice

Three pith balls supported by insulating threads hang from a support. We know that ball X is positively charged. When ball X is brought near balls Y and Z without touching them, it attracts Y and repels Z. Since pith is an insulating material, we can conclude that

• A) Y has a negative charge.
• B) Z has a negative charge.
• C) Y has a positive charge.
• D) Z is neutral (has no net charge.)
• E) Y is negatively charged or neutral (has no net charge.)

Explain the influence of social context and media on perception and decision-making.

Describe the effects of overconfidence and planning fallacy on behavior and decision outcomes.

Recognize the role of visual information processing in human cognition and its implications.

Understand the consequences of confirmation bias in validating pre-existing beliefs and information.

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Definitions:

P < 0.05

A statistical threshold indicating that the observed results are significant with a probability of less than 5% being due to chance.

Obtained Value

The actual value measured or computed from a data set or experiment, often compared against a theoretic or critical value in hypothesis testing.

Population Standard Deviation

The population standard deviation is a measure of the dispersion or spread of a set of values within a population, quantifying how much the values differ from the population mean.

Square Root

A value that, when multiplied by itself, gives the original number, representing the inverse operation of squaring.