A Proton Moves Around a Circular Path (Radius = 2

question 48

Multiple Choice

A proton moves around a circular path (radius = 2.0 mm) in a uniform 0.25-T magnetic field. What total distance does this proton travel during a 1.0-s time interval? (m = 1.67 × 10−²⁷ kg, q = 1.6 × 10−¹⁹ C)

• A) 82 km
• B) 59 km
• C) 71 km
• D) 48 km
• E) 7.5 km

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Definitions:

Pure Monopoly

A market structure where a single firm is the sole producer of a product or service with no close substitutes, giving it significant control over price.

Profit-maximizing Price

The price level at which a company can sell its product or service to maximize its profit, considering cost, demand, and competition.

Economic Profits

The excess of total revenue over total cost, including both explicit and implicit costs, reflecting the true profitability of a business.

Marginal-cost Pricing

A pricing strategy where the price of a product is set equal to the additional cost of producing one extra unit of output.