An Electrical Spark, Such as Lightning, Generates Electromagnetic Radiation Over

question 132

Multiple Choice

An electrical spark, such as lightning, generates electromagnetic radiation over a wide range of wavelengths. How much longer will a pulse of radio energy take to travel between two detector stations 100 m apart than will a pulse of ultraviolet radiation from the same spark?

• A) The time will be identical because both pulses travel at the speed of light.
• B) Just a little longer because the high frequency UV radiation travels faster than the low frequency radio waves.
• C) A much shorter time because long wavelength radiation travels faster.
• D) A much longer time because radio waves have much longer wavelengths and therefore travel slower.

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Definitions:

Contribution Margin Ratio

The contribution margin ratio calculates the proportion of sales revenue that exceeds variable costs, showing what portion of sales contributes to covering fixed costs and generating profit.

Selling Price

The amount at which a product or service is sold to customers, determined by factors such as market demand, production costs, and competition.

Variable Cost

Costs that vary directly with the level of production or business activity.

Sales Dollars

The revenue generated from goods or services sold, expressed in dollars.