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The electron beam in a typical scanning electron microscope produces kinetic energies of 22.0 keV. (a)...
The electron beam in a typical scanning electron microscope produces kinetic energies of 27.0 keV (a)...
The electron beam in a typical scanning electron microscope produces kinetic energies of 27.0 keV (a) Assuming that relativistic effects can be ignored, what is the speed of the electrons? Number m/s (b) What potential difference is required to produce electrons of this energy? Number Units (c) This accelerating potential difference is applied over a distance of 1.80 cm. What is the electric field in that region? Number Units
please explain, thank you! The electron beam in a certain electron microscope produces electrons with a...
please explain, thank you!
The electron beam in a certain electron microscope produces electrons with a kinetic energy of 173 keV. What is the de Broglie wavelength of these electrons (and hence the size of the smallest thing this microcope can "see")? Again, you will need to use relativity. m(+2E-14 m)
9. The scanning-tunneling microscope works on the principle of electron tunneling. Imagine you are trying to optimize your scanning tunneling microscope. Your microscope has a gold tip (work func...
9. The scanning-tunneling microscope works on the principle of electron tunneling. Imagine you are trying to optimize your scanning tunneling microscope. Your microscope has a gold tip (work function 5.1 eV) and your electron has a kinetic energy of 4.6 eV (a) If you move the tip to sample distance from 0.3 nm to 0.2nm how does the transmission probability change? (b) You have a "brilliant" idea. What if you use protons instead of electrons? How will the transmission probability...
In the figure, an electron with an initial kinetic energy of 3.50 keV enters region 1...
In the figure, an electron with an initial kinetic energy of
3.50 keV enters region 1 at time t = 0. That region contains a
uniform magnetic field directed into the page, with magnitude
0.00910 T. The electron goes through a half-circle and then exits
region 1, headed toward region 2 across a gap of 22.0 cm. There is
an electric potential difference ?V = 2000 V across the gap, with a
polarity such that the electron's speed increases uniformly...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cm the electrons are accelerated to a speed of 1.62x107 m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103 N/C perpendicular to...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cmthe electrons are accelerated to a speed of 1.62x107m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103N/C perpendicular to the electron beam....
A beam of electrons with kinetic energy of 1 keV passes through a slit of width...
A beam of electrons with kinetic energy of 1 keV passes through a slit of width a = 1 micro-m. The electron beam is then detected on a phosphorescent scree loacted at a distance D = 1 m from the slit. What is the width W of the "image" of the electron beam?
11:46 Question 7 View Policies Current Attempt in Progress In the figure, an electron with an initial kinetic energy of 4.30 keV enters region 1 at time t = O. That region contains a uniform magn...
11:46 Question 7 View Policies Current Attempt in Progress In the figure, an electron with an initial kinetic energy of 4.30 keV enters region 1 at time t = O. That region contains a uniform magnetic field directed into the page, with magnitude 0.00710 T. The electron goes through a half-circle and then exits region 1, headed toward region 2 across a gap of 22.0 cm. There is an electric potential difference AV- 1900 V across the gap, with a...
In an electron microscope, there is an electron gun that contains two charged metallic plates 3.15...
In an electron microscope, there is an electron gun that contains two charged metallic plates 3.15 cm apart. An electric force accelerates each electron in the beam from rest to 8.20% of the speed of light over this distance. (Ignore the effects of relativity in your calculations.) (a) Determine the kinetic energy of the electron as it leaves the electron gun. Electrons carry this energy to a phosphorescent viewing screen where the microscope's image is formed, making it glow. ______________J...
When a fast electron (i.e., one moving at a relativistic speed) passes by a heavy atom,...
When a fast electron (i.e., one moving at a relativistic speed) passes by a heavy atom, it interacts with the atom's electric field. As a result, the electron's kinetic energy is reduced, the electron slows down in the meantime, a photon of light is emitted. The kinetic energy lost by the electron equals the energy E_r of a photon of radiated light. E = K - K', where K and K' are the kinetic energies of the electron before and...
The electron beam in a typical scanning electron microscope produces kinetic energies of 27.0 keV (a) Assuming that relativistic effects can be ignored, what is the speed of the electrons? Number m/s (b) What potential difference is required to produce electrons of this energy? Number Units (c) This accelerating potential difference is applied over a distance of 1.80 cm. What is the electric field in that region? Number Units
please explain, thank you!
The electron beam in a certain electron microscope produces electrons with a kinetic energy of 173 keV. What is the de Broglie wavelength of these electrons (and hence the size of the smallest thing this microcope can "see")? Again, you will need to use relativity. m(+2E-14 m)
9. The scanning-tunneling microscope works on the principle of electron tunneling. Imagine you are trying to optimize your scanning tunneling microscope. Your microscope has a gold tip (work function 5.1 eV) and your electron has a kinetic energy of 4.6 eV (a) If you move the tip to sample distance from 0.3 nm to 0.2nm how does the transmission probability change? (b) You have a "brilliant" idea. What if you use protons instead of electrons? How will the transmission probability...
In the figure, an electron with an initial kinetic energy of
3.50 keV enters region 1 at time t = 0. That region contains a
uniform magnetic field directed into the page, with magnitude
0.00910 T. The electron goes through a half-circle and then exits
region 1, headed toward region 2 across a gap of 22.0 cm. There is
an electric potential difference ?V = 2000 V across the gap, with a
polarity such that the electron's speed increases uniformly...
11:46 Question 7 View Policies Current Attempt in Progress In the figure, an electron with an initial kinetic energy of 4.30 keV enters region 1 at time t = O. That region contains a uniform magnetic field directed into the page, with magnitude 0.00710 T. The electron goes through a half-circle and then exits region 1, headed toward region 2 across a gap of 22.0 cm. There is an electric potential difference AV- 1900 V across the gap, with a...
When a fast electron (i.e., one moving at a relativistic speed) passes by a heavy atom, it interacts with the atom's electric field. As a result, the electron's kinetic energy is reduced, the electron slows down in the meantime, a photon of light is emitted. The kinetic energy lost by the electron equals the energy E_r of a photon of radiated light. E = K - K', where K and K' are the kinetic energies of the electron before and...
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