An Electron in an Atom Drops from an Energy Level

question 22

Multiple Choice

An electron in an atom drops from an energy level at -1.1 *10^-18 J to an energy level at -2.4* 10^-18 J.The wave associated with the emitted photon has a frequency of:

• A)2.0 * 10¹⁷ Hz
• B)2.0 *10¹⁵ Hz
• C)2.0 * 10¹³ Hz
• D)2.0 * 10¹¹ Hz
• E)2.0 *10⁹ Hz

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Definitions:

Break-even Point

The break-even point is reached when the overall expenses match the total income, leading to no gains or losses.

Sales Mix

The combination of products or services that a company sells, impacting the overall profitability.

Operating Income

Earnings before interest and taxes (EBIT), representing the profit from core business operations.

Contribution Format

Contribution format is an income statement format that separates costs into fixed and variable categories, highlighting the contribution margin of goods or services sold.