microwave oven can heat 330 g of water from 25.0°C to 100.0°C in 2.60 min. The specific heat of water is 4186 J/kg·K. These microwaves pass through a waveguide of cross-sectional area 61.0 cm2. What is the average intensity of the microwaves in the waveguide? *need answer in W/m2*

microwave oven can heat 330 g of water from 25.0°C to 100.0°C in 2.60 min. The specific heat of water is 4186 J/kg·K. These microwaves pass through a waveguide of cross-sectional area 61.0 cm2. What is the average intensity of the microwaves in the waveguide? need answer in W/m2

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 22PE: (a) What is the wavelength of 100MHz radio waves used in an MRI unit? (b) If the frequencies are...

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Question

A microwave oven can heat 330 g of water from 25.0°C to 100.0°C in 2.60 min. The specific heat of water is 4186 J/kg·K.

These microwaves pass through a waveguide of cross-sectional area 61.0 cm². What is the average intensity of the microwaves in the waveguide?

*need answer in W/m2*

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