Spherical Particles of Density 1

question 88

Multiple Choice

Spherical particles of density 1.8 g/cm³ are shaken in a container of water (viscosity = 1.0 × 10−³ N⋅s/m³) .The water is 9.0 cm deep and is allowed to stand for 30 minutes.What is the radius of the largest particles still in suspension at that time?

• A)2.5E-6 m
• B)6.4E-6 m
• C)5.4E-6 m
• D)1.8E-6 m
• E)4.1E-6 m

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Definitions:

Logical Errors

Faulty reasoning patterns or mistaken beliefs that often result from cognitive biases or limitations.

Conclusions

Statements or judgments that are arrived at by reasoning from evidence or facts.

Experiment

A research method involving the manipulation of one or more independent variables to determine their effect on a dependent variable, within a controlled environment.

Control Group

A group in an experiment that does not receive the treatment and is used as a benchmark to measure how the other tested groups do.