An L-Shaped Metal Machine Part Is Made of Two Equal-Length

question 888

Multiple Choice

An L-shaped metal machine part is made of two equal-length segments that are perpendicular to each other and carry a 4.50-A current as shown in the figure.This part has a total mass of 3.80 kg and a total length of 3.00 m,and it is in an external 1.20-T magnetic field that is oriented perpendicular to the plane of the part,as shown.What is the magnitude of the NET magnetic force that the field exerts on the part?

• A) 8.10 N
• B) 11.5 N
• C) 16.2 N
• D) 22.9 N
• E) 32.4 N

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Definitions:

Progression Principle

The principle that a need isn’t activated until the previous lower-level need is satisfied.

Hierarchy Principle

A system or organization in which people or groups are ranked one above the other according to status or authority.

Deficit Principle

The principle that a satisfied need does not motivate behaviour.

Safety Needs

Basic human necessities for security and protection from physical and emotional harm, as identified in Maslow's hierarchy of needs.