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I have just completed a science fair project about different power settings of a

ID: 2118936 • Letter: I

Question

I have just completed a science fair project about different power settings of a microwave. I was wondering if the wavelength of the microwaves changes depending on the power setting, or if the way the microwave heats things up is different depending on the setting. I used the defrost setting, the normal setting, and the popcorn setting in my experiment. I microwaved egg whites, measured the distance between "hot spots" and multiplied it by 2 to find the wavelength. I got that the defrost setting had microwaves with a wavelength 0f 14.6, while the popcorn setting had microwaves with wavelengths of 17.2, regular had 17. I have no explanation for why this happened. I thought the popcorn setting would have the shortest wavelength because it would be the most powerful...Or is that not the case? Any help would be greatly appreciated!

Explanation / Answer

the equation of wavelength of microwave is

lamda = (h/m x v)

where h is planck's constant(6.63 x 10^-34 J-s),m is mass of electron(9.1 x 10^-31 kg) and v is speed of electron

the wavelength decreases as the speed of electron increases while the wavelength increases as the speed of electron decreases.here,h and m are constants.

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