Quantinzation of Energy & Planck help

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Homework Help Overview

The discussion revolves around the quantization of energy in the context of photon emission and electromagnetic waves. Participants are exploring calculations related to energy transitions in atoms and the relationship between frequency and wavelength in radio signals.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • One participant attempts to calculate the frequency of a photon emitted during an electron transition between two energy levels, questioning how to handle the energy values. Another participant explains the conservation of energy principle in this context. Additionally, another participant discusses calculating the wavelength of an FM radio signal, expressing confusion over their calculations and seeking clarification.

Discussion Status

The discussion includes attempts to clarify the relationship between energy levels and photon frequency, with some guidance provided on the conservation of energy principle. There is also a back-and-forth regarding the calculations for wavelength, with one participant correcting their earlier mistake while another seeks further assistance on a different frequency.

Contextual Notes

Participants are working within the constraints of homework problems, which may limit the information available for solving the questions. There is an emphasis on understanding the relationships between energy, frequency, and wavelength without providing direct solutions.

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Can anyone help me with this question? Thanx



Calculate the frequency of the photon emitted when an electron in an atom changes from (-2.42e-19 joules) to (-21.76e-19 joules).

I know that I'm going to use E=hf and h=6.63e-34. I'm not sure what I do with the 2 energy levels, do i subtract them?
 
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A photon is emitted when an electron falls into a lower energy level. The photon must equal the difference in energy due to conservation of energy. E will equal the difference in energy levels. You can then use algebra to determine f, the frequency.
 
Electromagnectic Wave Help

Can anyone help me with this problem?

What is the wavelength for an FM radio signal if the number on the dial reads 98.5 MHz? C=3e8

I know that c=f wavelength, and MHz is a million hertz I thought I could do 1E6 x 98.5=9.85e7 and then I could just solve for the wavelength with 3e8=9.85e7wavelength but I keep getting the wrong answer. Am i missing something??
 
What answer are you getting?
 
My mistake I got that one it is 3.05. But another where there frequency is 25 GHz. To find the wavelength on this one i would 3e8/25e9=0.012, and that is wrong. Thanx
 
If its 25 ghz... then 0.012m is correct...
 

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