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4. A photon is emitted as a result of an electron transition from a higher energy...
Applied quantum mechanics 1. Calculate the carrier concentrations (p and n) for Si at 300k for...
Applied quantum mechanics
1. Calculate the carrier concentrations (p and n) for Si at
300k for the following doping concentrations:
2.
(a) ND = 1015/cm3
(b) NA = 1018/cm3
(c) ND = 5 x 1017/cm3
Calculate the majority and minority carriers for each side of
an N+P junction if ND = 2 x 1017/cm3 for the n-side, and NA =
1014/cm3 for the p-side.
Assume the semiconductor is Si and the temperature is
300K.
3. Determine the energy of:
(a)...
4. A photon is emitted when a hydrogen atom undergoes a transition from the n =...
4. A photon is emitted when a hydrogen atom undergoes a transition from the n = 5 state to the n = 3 state. a. Calculate the wavelength of the emitted photon. b. What is the energy in eV of the emitted photon?
Calculate the,energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 4 t...
Calculate the,energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 4 to n = 1. energy emitted: 2.71 x10-19 J Assuming that the smallest measurable wavelength in an experiment is 0.330 fm, what is the maximum mass of an object traveling at 885 m s for which the de Broglie wavelength is observable? kg m=
In a ruby laser, an electron jumps from a higher energy level to a lower one....
In a ruby laser, an electron jumps from a higher energy level to a lower one. If the energy difference between the two levels is 1.79 ev, what is the wavelength of the emitted photon? Select one a. 469 nm b. 649 nm C. 694 nm d. 964 nm
Question 8 An electron in an atom absorbs a photon with an energy of 3.07 eV and jumps from the n 2 to n = 4 energy lev...
Question 8 An electron in an atom absorbs a photon with an energy of 3.07 eV and jumps from the n 2 to n = 4 energy level in the atom. Tries remaining: Calculate the wavelength of the photon absorbed by the electron. Marked out of 1.00 Answer m Flag question Check Question 9 4 level then jumps down to the n 3 level, emitting a photon with a wavelength of 2.14 um. The electron in the n Tries remaining:...
A photon is emitted when a hydrogen atom undergoes a transition from the n = 8...
A photon is emitted when a hydrogen atom undergoes a transition from the n = 8 state to the n = 2 state. Calculate values for the following. (a) the wavelength. nm (b) the frequency. Hz (c) the energy of the emitted photon. eV
What is wavelength of a photon that would be emitted when a hydrogen atom makes a...
What is wavelength of a photon that would be emitted when a hydrogen atom makes a transition from the n = 3 to the n = 2 energy level? What is the longest wavelength photon that could ionize a hydrogen atom originally in its ground state? What processes might occur if an electron of energy 12.2 eV collides with a hydrogen atom at rest and in its ground state?
Energy (eV) 1. The figure to the right shows the first few energy levels for lithium. The ground state for the valence electron (the electron most likely to change 4 energy levels) is the 2s state wh...
Energy (eV) 1. The figure to the right shows the first few energy levels for lithium. The ground state for the valence electron (the electron most likely to change 4 energy levels) is the 2s state which is why that state is set to O eV. Make a table showing all possible transitions in the emission spectrum. For each possible transition indicate A. Energy change of possible transition. B. At for the transition. Is the transition allowed? C. Wavelength of...
An electron in hydrogen transitions from n = 5 to n = 1. Was a photon...
An electron in hydrogen transitions from n = 5 to n = 1. Was a photon absorbed or emitted by this electron? (Since the electron "jumped" down to a lower energy level, it must have lost energy, so a photon was emitted.) Find the energy of the photon. (13.1 eV) Find the photon's energy in joules. (2.10times 10^-18 J) Find the momentum of the photon. (7.00 times 10^-27 kg. m/s) Find the wavelength of this photon. (94.7 nm)
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 7 to n = 1.
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 7 to n = 1. energy emitted = _______ J
Applied quantum mechanics
1. Calculate the carrier concentrations (p and n) for Si at
300k for the following doping concentrations:
2.
(a) ND = 1015/cm3
(b) NA = 1018/cm3
(c) ND = 5 x 1017/cm3
Calculate the majority and minority carriers for each side of
an N+P junction if ND = 2 x 1017/cm3 for the n-side, and NA =
1014/cm3 for the p-side.
Assume the semiconductor is Si and the temperature is
300K.
3. Determine the energy of:
(a)...
4. A photon is emitted when a hydrogen atom undergoes a transition from the n = 5 state to the n = 3 state. a. Calculate the wavelength of the emitted photon. b. What is the energy in eV of the emitted photon?
Calculate the,energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 4 to n = 1. energy emitted: 2.71 x10-19 J Assuming that the smallest measurable wavelength in an experiment is 0.330 fm, what is the maximum mass of an object traveling at 885 m s for which the de Broglie wavelength is observable? kg m=
In a ruby laser, an electron jumps from a higher energy level to a lower one. If the energy difference between the two levels is 1.79 ev, what is the wavelength of the emitted photon? Select one a. 469 nm b. 649 nm C. 694 nm d. 964 nm
Question 8 An electron in an atom absorbs a photon with an energy of 3.07 eV and jumps from the n 2 to n = 4 energy level in the atom. Tries remaining: Calculate the wavelength of the photon absorbed by the electron. Marked out of 1.00 Answer m Flag question Check Question 9 4 level then jumps down to the n 3 level, emitting a photon with a wavelength of 2.14 um. The electron in the n Tries remaining:...
What is wavelength of a photon that would be emitted when a hydrogen atom makes a transition from the n = 3 to the n = 2 energy level? What is the longest wavelength photon that could ionize a hydrogen atom originally in its ground state? What processes might occur if an electron of energy 12.2 eV collides with a hydrogen atom at rest and in its ground state?
Energy (eV) 1. The figure to the right shows the first few energy levels for lithium. The ground state for the valence electron (the electron most likely to change 4 energy levels) is the 2s state which is why that state is set to O eV. Make a table showing all possible transitions in the emission spectrum. For each possible transition indicate A. Energy change of possible transition. B. At for the transition. Is the transition allowed? C. Wavelength of...
An electron in hydrogen transitions from n = 5 to n = 1. Was a photon absorbed or emitted by this electron? (Since the electron "jumped" down to a lower energy level, it must have lost energy, so a photon was emitted.) Find the energy of the photon. (13.1 eV) Find the photon's energy in joules. (2.10times 10^-18 J) Find the momentum of the photon. (7.00 times 10^-27 kg. m/s) Find the wavelength of this photon. (94.7 nm)
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