The Energy of a Quantum of Radiation in a Vacuum $\times$

question 35

Multiple Choice

The energy of a quantum of radiation in a vacuum that has a wavelength of 447 nm is approximately

• A)2.37 \(\times\) 10^-19 J
• B)1.60 \(\times\) 10^-19 J
• C)9.88 \(\times\) 10^-33 J
• D)9.11 \(\times\) 10^-31 J
• E)None of these is correct.

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Definitions:

Contribution Margin

The difference between sales revenue and variable costs, used to cover fixed costs and contribute to profits.

Gross Margin

The financial metric representing the difference between revenue and the cost of goods sold, divided by revenue, often expressed as a percentage. It indicates how efficiently a company is using its resources to produce goods.

Contribution Margin

Contribution margin is the revenue remaining after deducting variable costs, used to cover fixed costs and profit.

Variable Cost

Costs that change in proportion to the level of goods or services that a business produces.