**How do i do this physics problem? AnandTech Forums**

Problem #2: If it takes 3.36 x 10-19 J of energy to eject an electron from the surface of a certain metal, calculate the longest possible wavelength, in nanometers, of light that can ionize the metal.... 21/09/2009 · Best Answer: So, in order to emit electrons from a material in this way, the photon energy must be higher than the work function energy. The bare minimum energy that a …

**The work function for caesium atom is 1.9 eV. Calculate (a**

1.The first step in this problem is to convert the wavelength, λ, to a frequency, ν, and then calculate the energy of the photon using ε = hν.... Given that the work function of chromium is 4.40 eV, calculate the kinetic energy of electrons emitted from a chromium surface that is irradiated with ultraviolet radiation of wavelength 200 nm. When a clean surface of silver is irradiated with light of wavelength 230 nm, the kinetic energy of the ejected electrons is found to be 0.805 eV. Calculate the work function and the threshold

**The Photoelectric Effect Special and General Relativity**

or if you prefer, to the energy of the absorbed photons (E) and the work function (ϕ) of the surface K max = E − ϕ where the first term is the energy of the absorbed photons ( E ) with frequency ( f ) or wavelength … how to lose 5-10kg in 2 months escapes from the metal with a kinetic energy equal to the diﬀerence between the photon’s original energy and the electron’s binding energy (by conservation of energy).

**a. The work function for metallic caesium is 2.14 eV**

13/12/2009 · is the work function (sometimes denoted W instead), the minimum energy required to remove a delocalised electron from the surface of any given metal, is the maximum kinetic energy of ejected electrons, how to find private ip address in oracle rac 7/10/2012 · Given work function and maximum kinetic energy, find the wavelength of incident light? Determine the maximum kinetic energy and Potential difference ? Stuck on E=hf question.

## How long can it take?

### Photoelectric effect (article) Photons Khan Academy

- How to Convert Energy to Wavelength YouTube
- The work function for tungsten is `4.58 eV` . Find the
- The work function for tungsten is `4.58 eV` . Find the
- Photons deBroglie wavelength electron diffraction

## How To Find Work Function Given Wavelength And Kinetic Energy

Work Function Einstein believed that to give a single electron the energy to move, the metal was hit by a single photon (destroying itself), and transferred its energy to the one electron.

- The work function of a metal `phi`, the wavelength of the incident photon lambda required to eject an electron with the maximum kinetic energy `K_(max)` is expressed by Einsteins photoelectric
- escapes from the metal with a kinetic energy equal to the diﬀerence between the photon’s original energy and the electron’s binding energy (by conservation of energy).
- In relating a particle's energy to its wavelength, two equations are used. The first is the kinetic energy equation: The deBroglie Equation: Example Problems. Problem #1: What is the wavelength of an electron (mass = 9.11 x 10¯ 31 kg) traveling at 5.31 x 10 6 m/s? 1) The first step in the solution is to calculate the kinetic energy of the electron: KE = (1/2)mv 2. x = (1/2) (9.11 x 10
- The kinetic energy (KE) is equal to the total energy (hv) minus the threshold energy (hv0). The v0 is the threshold frequency from part A. v is the frequency from part B after converting from wavelength.