A Stone of Volume 1 $\times$ 10^-2 M³ Lies at the Bottom of a Freshwater Lake

question 65

Multiple Choice

A stone of volume 1.42 $\times$ 10^-2 m³ lies at the bottom of a freshwater lake.If the rock's specific gravity is 3.5,the work required to lift it 1 m through the water is approximately

• A)487 J
• B)139 J
• C)348 J
• D)223 J
• E)469 J

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Definitions:

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter, expressed with a certain level of confidence.

Confidence Level

A confidence level is a statistical parameter that expresses how certain one is in the results of a statistical experiment, often represented as a percentage that quantifies the probability that the true parameter lies within the confidence interval.

Population Standard Deviation

The population standard deviation is a measure of the dispersion or variation of all members in a full set or 'population' of data.

Maximum Allowable Error

The largest error that is tolerated in the measurement process, beyond which the measurement is considered unacceptable.