A 25 Cm-Long Horizontal Wire Segment Has a Mass of 0

question 67

Multiple Choice

A 2.5 cm-long horizontal wire segment has a mass of 0.15 g and carries a current sufficiently large that it levitates when the segment is in a region of uniform B field of magnitude 1.5 T. Assume that the B field is horizontal and perpendicular to the wire segment. The current is passed to the segment by way of massless electrical leads. What is the magnitude of the current in the wire?

• A) 39 mA
• B) 25 A
• C) 4.0 mA
• D) Not enough information is given.

Identify key brain structures involved in regulating basic behaviors including feeding and drinking.

Describe the role of stretch receptors in signaling hunger satisfaction.

Comprehend the mechanisms of short-term and long-term eating regulation.

Understand the components of food and their nutritional significance.

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Definitions:

F-test Statistic

A statistical test used to compare the variances of two populations to investigate whether they are equal.

Regression Equation

An equation derived from regression analysis that expresses the predicted value of the dependent variable as a function of one or more independent variables.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Regression Coefficient

A value that represents the degree of change in the dependent variable for a one-unit change in the independent variable within a regression model.