What Equations Calculate Kinetic Energy and Work Function in Physics?

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To calculate the maximum kinetic energy and work function for Barium with a frequency of 6.25 x 10^14 Hz and a cutoff potential of 0.10V, the equation E = eV can be applied, where E represents energy and eV is the energy associated with the cutoff potential. The cutoff potential indicates the minimum energy required to prevent electron emission. The threshold frequency can be determined using the equation f_0 = W/e, where W is the work function. Understanding these relationships is crucial for solving the problem effectively. The discussion emphasizes the importance of grasping the concepts behind the equations used in these calculations.
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how to solve this problem? :( help

Hello, I have this questions which I am confused at, :( I can't figure out what equation to use to solve it :(

given that the frequency of Barium is 6.25X10^14 Hz and the cutoff Potential is 0.10V find the Max Kenitic Energy, threshold frequencie and work function

thanks a lot I would really appreciate the help :)
 
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Well start with the cut off potential, ask yourself, what exactly is this quantity?

If they said that the frequency of Ba is 6.25(1014)Hz, which frequency is this?
 


rock.freak667 said:
Well start with the cut off potential, ask yourself, what exactly is this quantity?

If they said that the frequency of Ba is 6.25(1014)Hz, which frequency is this?

asked myself, and couldn't answer it :(

Is it possible that I should use the equation E=eV ?
 


raladin3d said:
asked myself, and couldn't answer it :(

Is it possible that I should use the equation E=eV ?

Yes but do you know why you would use that equation?

Wouldn't the cut-off potential be the potential difference needed to stop the electrons from being emitted?
 

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