Glycerin at 30 $^{\circ}$ C Has a Density of 1,260 Kg/m³ and a Viscosity

question 76

Multiple Choice

Glycerin at 30 $^{\circ}$ C has a density of 1,260 kg/m³ and a viscosity of 0.630 Pa-s.The glycerin is poured through a funnel with a neck that is 10.0 cm long and 1.00 cm in diameter.If the level of glycerin is kept at a level 5.00 cm above the neck,then what is the flow rate of the glycerin through the funnel?

• A) 1.70 \(\times\) 10^-6 m³/s
• B) 1.87 \(\times\) 10^-6 m³/s
• C) 1.95 \(\times\) 10^-6 m³/s
• D) 2.05 \(\times\) 10^-6 m³/s
• E) 2.41 \(\times\) 10^-6 m³/s

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Definitions:

Laboratory Experimental Approach

A research method in which variables are manipulated and controlled in a lab setting to study their effects on outcomes of interest.

Randomly Assign

A method used in experimental designs where participants are allocated to different groups without any systematic criteria, helping to minimize bias.

Experimental Group

In research, the group of subjects who are exposed to the variable under investigation, in contrast to the control group.

Independent Variable

In experimental research, the variable that is intentionally manipulated by the researcher to explore its effect on a dependent variable.