A 20-N Rock Slides on a Frictionless Inclined Plane $\theta$ , Is Increased

question 85

Multiple Choice

A 2.0-N rock slides on a frictionless inclined plane. Which one of the following statements is true concerning the normal force that the plane exerts on the rock?

• A)The normal force is zero newtons.
• B)The normal force is 2.0 N.
• C)The normal force is less than 2.0 N, but greater than zero newtons.
• D)The normal force is greater than 2.0 N.
• E)It increases as the angle of inclination, \(\theta\), is increased.

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Definitions:

T-statistic

A type of statistic used in hypothesis testing, calculated as the difference between an observed sample mean and a hypothesized population mean, divided by the standard error of the mean.

Level of Significance

The level of significance is a threshold set by the researcher to determine the cutoff at which the null hypothesis can be rejected, commonly represented by alpha (α).

T-statistic

A statistical measure used to analyze the difference between two group means in relation to the variance observed within the groups.

Alpha

Alpha, often represented as α, is the threshold probability of committing a Type I Error, typically set at 0.05 or 5% in hypothesis testing.