An Electron Is Traveling East with an Instantaneous Velocity of 3.3

question 77

Multiple Choice

An electron is traveling east with an instantaneous velocity of 3.3 × 10⁵ m/s when it enters a uniform magnetic field of 0.25 T that points X degrees north of east. Take east as to the right of the paper and north as toward the top of the paper, i.e., both in the plane of the paper.) If the magnitude of the force on the electron is 5.5 × 10^-15 N, then calculate the angle X and whether the electron moves up out of or down into the plane of the page, or otherwise.

• A) 25° and up out of the page
• B) 65° and down into the page
• C) 25° and down into the page
• D) 65° and up out of the page
• E) 65° and south in the plane of the paper

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Definitions:

Net Operating Income

The profit realized from a business's operations after subtracting operating expenses from operating revenues.

Absorption Costing

A costing method that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed overhead - in the cost of a product.

Variable Costing

A costing approach where only the variable costs involved in production—such as raw materials, direct labor, and variable manufacturing expenses—are included in the cost of goods sold, leaving out fixed manufacturing overheads.

Contribution Margin

The amount by which the sales of a product exceed its variable costs, representing the portion of sales revenue that contributes to covering fixed costs and generating profit.