On its highest power setting, a certain microwave oven projects 1 00 kW of microwaves onto a 30 0 by 40 0 cm area (a) What is the intensity in W m 2 (b) Calculate the peak electric field strength E 0 in these waves (c) What is the peak magnetic field strength B 0 Strategy In part (a), we can find intensity from its definition as power per unit area Once the intensity is known, we can use the equations below to find the field strengths asked for in parts (b) and (c)

Question: On its highest power setting, a certain microwave oven projects 1.00 kW of microwaves onto a 30.0 by 40.0 cm area. (a) What is the

On its highest power setting, a certain microwave oven projects 1.00 kW of microwaves onto a 30.0 by 40.0 cm area.

(a) What is the intensity in W/m²?

(b) Calculate the peak electric field strength E₀ in these waves.

Strategy

In part (a), we can find intensity from its definition as power per unit area. Once the intensity is known, we can use the equations below to find the field strengths asked for in parts (b) and (c).

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