Water Is Being Sprayed from a Nozzle at the End

question 23

Multiple Choice

Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.0 cm.If the nozzle has an opening of diameter 1.0 cm,and if the water leaves the nozzle at a speed of 12 m/s,what is the speed of the water inside the hose?

• A) 3 m/s
• B) 48 m/s
• C) 0.02 m/s
• D) 4 m/s
• E) ​also 12 m/s

Understand the role and application of different research methods in psychology including longitudinal studies, triangulation, and controlled experiments.

Recognize the utility and implications of using projective tests, informant reports, and physiological measures in psychological assessments.

Appreciate the ethical considerations in psychological research, including informed consent and the use of control groups.

Grasp the essence of experimental variables (independent and dependent) and their roles in psychological studies.

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Definitions:

F-ratio

A statistical value used in the analysis of variance (ANOVA) to compare the variability among group means to the variability within groups.

Explanatory Variables

Variables in a statistical model that are used to explain variation in the outcome or response variable.

Regression Model

A statistical method used to model the relationship between a dependent variable and one or more independent variables.

Equation

A mathematical statement that asserts the equality of two expressions.