You Are Whirling a Stone on the End of a String

question 44

Multiple Choice

You are whirling a stone on the end of a string in a horizontal circle of radius R = 0.65m with a frequency of 4 rev/s when the string breaks.Just after the string breaks,the velocity of the stone is

• A)straight down.
• B)32 m/s along a tangent to the circle.
• C)16 m/s along the radius away from the center.
• D)1.0 m/s along the radius toward the center.
• E)none of these

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Definitions:

Clinical Significance

An attribute of research results, referring to the practical utility of the treatment studied, which does not follow automatically from the results’ statistical significance.

Statistical Significance

An attribute of research results when it is extremely unlikely that they could have occurred purely by chance. The standard by which most research is judged as valuable or worthy of being published.

Practical Utility

Refers to the usefulness or applicability of something in real-world situations, often considering efficiency and cost-effectiveness.

Case Study

A research method involving an in-depth, detailed examination of a subject or its context.