Physics, 07.04.2020 17:23 Serenitybella
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 amplitude of the electric field? (c = 3.00 × 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2) Group of answer choices
Answers: 2
Physics, 22.06.2019 16:50
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
Physics, 22.06.2019 17:10
Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up
Answers: 2
Physics, 22.06.2019 22:00
Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?
Answers: 1
A microwave oven operates with sinusoidal microwaves at a frequency of 2400 MHz. The height of the o...
Arts, 18.05.2021 20:10
Mathematics, 18.05.2021 20:10
Mathematics, 18.05.2021 20:10
English, 18.05.2021 20:10
Mathematics, 18.05.2021 20:10
Mathematics, 18.05.2021 20:10
English, 18.05.2021 20:10
Biology, 18.05.2021 20:10
Mathematics, 18.05.2021 20:10
English, 18.05.2021 20:10
Social Studies, 18.05.2021 20:10