Waves in a microwave have a frequence of 2.5 GHz, what wavelength do they have? The answer should be 0.12m.

What am I doing wrong here? Here's what I get:

Energy = (6,6*10^-34)*(2,5*10^9) = 1,65*10^-24 J

Wavelength = ((6.6*10^-34)*(1.6*10^-19)) / 81,65*10^-24) = 6,4*10^-29

Question

Waves in a microwave have a frequence of 2.5 GHz, what wavelength do they have? The answer should be 0.12m.

What am I doing wrong here? Here's what I get:

Energy = (6,6*10^-34)*(2,5*10^9) = 1,65*10^-24 J

Wavelength = ((6.6*10^-34)*(1.6*10^-19)) / 81,65*10^-24) = 6,4*10^-29

anonymous · Answer

Last line SHOULD read: Wavelength = ((6.6*10^-34)*(1.6*10^-19)) / (1,65*10^-24) = 6,4*10^-29

anonymous · Answer

Use, Velocity = Frequency * Wavelength

Take Velocity = Velocity of Light = 3*10^8 m

Given Frequency = 2.5 GHz = 2.5 *10^9 Hz

=> Wavelength = Velocity / Frequency