A Microwave Oven Operates with Sinusoidal Microwaves at a Frequency

question 21

Multiple Choice

A microwave oven operates with sinusoidal microwaves at a frequency of 2400 MHz.The height of the oven cavity is 25 cm and the base measures 30 cm by 30 cm.Assume that microwave energy is generated uniformly on the upper surface of the cavity and propagates directly downward toward the base.The base is lined with a material that completely absorbs microwave energy.The total microwave energy content of the cavity is 0.50 µJ.What is the power output of the oven? (c = 3.00 × 10⁸ m/s,μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)0.50 kW
• B)0.55 kW
• C)0.60 kW
• D)0.65 kW
• E)0.70 kW

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Definitions:

Equilibrium Quantity

The amount of a good or service that is supplied and demanded at the equilibrium market price.

Marginal Product

The additional output resulting from the use of one more unit of a factor of production.

Computer Programmers

Professionals skilled in writing and testing the code that enables software applications to function according to user or system design specifications.

Labor Demand Curve

A graphical representation showing the relationship between the quantity of labor demanded by employers and the wage rate.