A Solid Ball of Mass 2 Kg and Diameter 20

question 36

Multiple Choice

A solid ball of mass 2 kg and diameter 20 cm is rotating about its diameter at 100 rev/min.The kinetic energy of rotation is

• A)2.59 J.
• B)1.76 J.
• C)0.91 J.
• D)0.44 J.
• E)0.22 J.

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Definitions:

Z-score

A statistical measure that describes a value's relationship to the mean of a group of values, expressed in terms of standard deviations from the mean.

Average Cost

A method of inventory valuation where the cost of goods sold and ending inventory are calculated based on the weighted average of all purchases.

Median Price

The middle price in a set of prices of goods or assets, where half the prices are higher and half are lower.

Frequency Distribution

A statistical tool that shows how often each different value in a set of data occurs.