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Problem 3. The human eye can typically see light in the wavelength range from around 400 nm (violet) to roughly 700 nm (red). What is the range of photon energies (in eV)? Answer Problem 4. Consider a I kW AM radio transmitter at 700 kHz. Calculate the number of photons emitted from the antenna per second. Answer

Can anyone answer problem 3 and 4 ?

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