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What's kinetic energy in electron

Calculate the kinetic energy of the photoelectron emitted by a metal (threshold energy is 1.50 x 10^-19J) exposed to light of
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2. asked by Anonymous
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An X-ray photon of wavelength 0.954 nm strikes a surface. The emitted electron has a kinetic energy of 935 eV.What is the
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2. asked by Amy
3. 13,050 views
A certain moving electron has a kinetic energyof 1.01 × 10−19 J. Calculate the speed necessary for the electron to have this
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2. asked by lucky
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In the ground state of the H-atom the electron has a total energy of -13.6 eV. What are (a) its kinetic energy, and (b) its
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2. asked by alice
3. 499 views
an electron in the second energy level absorbs a photon of energy 6 ev what's the speed of the ejected electron?I have tried to
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2. asked by K
3. 615 views
. In an electron microscope the electrons generate theimage. For one of the scanning electron microscopes in our Central
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2. asked by Anonymous
3. 635 views
In an electron microscope the electrons generate theimage. For one of the scanning electron microscopes in our Central
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2. asked by Anonymous
3. 515 views
An electron in an x-ray machine is accelerated through a potential difference of 1x10^4 V before it hits the target. What is the
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2. asked by mike
3. 2,495 views
A certain moving electron has a kinetic energyof 0.991 × 10−19 J. Calculate the speed necessary for the electron to have this
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2. asked by kc
3. 671 views
An X-ray photon of wavelength 0.948nm strikes a surface. The emitted electron has a kinetic energy of 979 eV.What is the binding
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2. asked by soso
3. 726 views