Two Small Spheres Attract One Another Electrostatically

question 54

Multiple Choice

Two small spheres attract one another electrostatically.This can occur for a variety of reasons.Which of the following statements must be true?

• A)at least one sphere is charged
• B)neither is charged
• C)both are charged
• D)both have the same charge
• E)None of these is correct.

---

Definitions:

Economic Profit

The difference between total revenues and total costs, including both explicit and implicit costs.

Economic Profits

Profits that exceed the costs of all inputs, including both explicit costs (like wages and materials) and implicit costs (like the opportunity cost of capital).

Industry Equilibrium

A state where supply and demand in an industry are balanced, leading to stable prices and quantities.

Economic Profits

The difference between total revenue and total costs, including both explicit and implicit costs, indicating the financial gain in excess of the opportunity costs.